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9969684
0705.0428
2007-05-03
An OFDM-CDMA scheme for high data rate UWB applications
In this paper, we investigate a new waveform for UWB systems obtained by the combination of Orthogonal Frequency Division Multiplex (OFDM) and Code Division Multiple Access (CDMA). The proposed system, called Spread Spectrum - Multi-Carrier - Multiple Access (SS-MC-MA) turns out to be a judicious solution to combat fre...
[ "physics.comp-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "e guéguen_0", "name": "Emeric Guéguen", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "m crussiére_1", "name": "Matthieu Crussiére", "publication_history": null, "h_index": null, "num_papers":...
null
36353276
0705.0430
2007-05-03
Combination of OFDM and CDMA for high data rate UWB
For Wireless Personal Area Network (WPAN) systems, resource allocation between several users within a piconet and the coexistence of several piconets are very important points to take into consideration for the optimization of high data rate Ultra Wide Band (UWB) systems. To improve the performance of the Multi-Band OF...
[ "physics.comp-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "e gu'eguen_0", "name": "Emeric Gu'eguen", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "n madaoui_0", "name": "Nadia Madaoui", "publication_history": null, "h_index": null, "num_papers": null...
null
271923736
0705.0666
2007-05-03
Validating module network learning algorithms using simulated data
In recent years, several authors have used probabilistic graphical models to learn expression modules and their regulatory programs from gene expression data. Here, we demonstrate the use of the synthetic data generator SynTReN for the purpose of testing and comparing module network learning algorithms. We introduce a ...
[ "q-bio.QM", "q-bio.MN" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "t michoel_1", "name": "Tom Michoel", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "s maere_0", "name": "Steven Maere", "publication_history": null, "h_index": null, "num_papers": null, "n...
null
2533479
0705.0402
2007-05-03
On the orbital periods of the AM CVn stars HP Librae and V803 Centauri
We analyse high-time-resolution spectroscopy of the AM CVn stars HP Librae and V803 Centauri, taken with the New Technology Telescope (NTT) and the Very Large Telescope (VLT) of the European Southern Observatory, Chile. We present evidence that the literature value for V803 Cen's orbital period is incorrect, based on a...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
7359203
0705.0429
2007-05-03
Bayesian reconstruction of the cosmological large-scale structure: methodology, inverse algorithms and numerical optimization
We address the inverse problem of cosmic large-scale structure reconstruction from a Bayesian perspective. For a linear data model, a number of known and novel reconstruction schemes, which differ in terms of the underlying signal prior, data likelihood, and numerical inverse extra-regularization schemes are derived an...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
16022906
0705.0707
2007-05-04
TeV Gamma-Ray Sources from a Survey of the Galactic Plane with Milagro
A survey of Galactic gamma-ray sources at a median energy of ~20 TeV has been performed using the Milagro Gamma Ray Observatory. Eight candidate sources of TeV emission are detected with pre-trials significance $>4.5\sigma$ in the region of Galactic longitude $l\in[30^\circ,220^\circ]$ and latitude $b\in[-10^\circ,10^\...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
5438273
0705.0552
2007-05-04
Succinct Indexable Dictionaries with Applications to Encoding $k$-ary Trees, Prefix Sums and Multisets
We consider the {\it indexable dictionary} problem, which consists of storing a set $S \subseteq \{0,...,m-1\}$ for some integer $m$, while supporting the operations of $\Rank(x)$, which returns the number of elements in $S$ that are less than $x$ if $x \in S$, and -1 otherwise; and $\Select(i)$ which returns the $i$-t...
[ "cs.DS", "cs.DM", "cs.IT", "math.IT" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
5236208
0705.0674
2007-05-04
A new spinfoam vertex for quantum gravity
We introduce a new spinfoam vertex to be used in models of 4d quantum gravity based on SU(2) and SO(4) BF theory plus constraints. It can be seen as the conventional vertex of SU(2) BF theory, the 15j symbol, in a particular basis constructed using SU(2) coherent states. This basis makes the geometric interpretation of...
[ "gr-qc", "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1943870
0705.0760
2007-05-05
Equivalence of LP Relaxation and Max-Product for Weighted Matching in General Graphs
Max-product belief propagation is a local, iterative algorithm to find the mode/MAP estimate of a probability distribution. While it has been successfully employed in a wide variety of applications, there are relatively few theoretical guarantees of convergence and correctness for general loopy graphs that may have man...
[ "cs.IT", "cs.AI", "cs.LG", "cs.NI", "math.IT" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "s sanghavi_1", "name": "S. Sanghavi", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
15146579
0705.0812
2007-05-06
Search for third-generation leptoquarks in ppbar collisions at sqrt(s)=1.96 TeV
We report on a search for charge-1/3 third-generation leptoquarks (LQ) produced in ppbar collisions at sqrt(s)=1.96 TeV using the D0 detector at Fermilab. Third generation leptoquarks are assumed to be produced in pairs and to decay to a tau neutrino and a b quark with branching fraction B. We place upper limits on sig...
[ "hep-ex" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "v abazov_1", "name": "Victor [\"Mukhamedovich\"] Abazov", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "b abbott_2", "name": "B. Abbott", "publication_history": null, "h_index": null, "num_pa...
null
206788763
0705.1013
2007-05-07
Tracking User Attention in Collaborative Tagging Communities
Collaborative tagging has recently attracted the attention of both industry and academia due to the popularity of content-sharing systems such as CiteULike, del.icio.us, and Flickr. These systems give users the opportunity to add data items and to attach their own metadata (or tags) to stored data. The result is an eff...
[ "cs.DL", "cs.CY" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "3205721", "num_citations": null } ]
[ { "author_id": "e santos-neto_1", "name": "Elizeu Santos-Neto", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "m ripeanu_1", "name": "Matei Ripeanu", "publication_history": null, "h_index": null, "num_papers"...
null
119153178
0705.0756
2007-05-07
A generalized photon propagator
A covariant gauge independent derivation of the generalized dispersion relation of electromagnetic waves in a medium with local and linear constitutive law is presented. A generalized photon propagator is derived. For Maxwell constitutive tensor, the standard light cone structure and the standard Feynman propagator are...
[ "hep-th" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "y itin_1", "name": "Y. Itin", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
2993704
0705.0938
2007-05-07
Extremal Graph Theory for Metric Dimension and Diameter
A set of vertices $S$ \emph{resolves} a connected graph $G$ if every vertex is uniquely determined by its vector of distances to the vertices in $S$. The \emph{metric dimension} of $G$ is the minimum cardinality of a resolving set of $G$. Let $\mathcal{G}_{\beta,D}$ be the set of graphs with metric dimension $\beta$ an...
[ "math.CO" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
4402268
0705.0993
2007-05-07
A map of the day-night contrast of the extrasolar planet HD 189733b
"Hot Jupiter" extrasolar planets are expected to be tidally locked because they are close (<0.05 astronomical units, where 1 AU is the average Sun-Earth distance) to their parent stars, resulting in permanent daysides and nightsides. By observing systems where the planet and star periodically eclipse each other, severa...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1037
0705.0999
2007-05-07
Cellular Systems with Full-Duplex Amplify-and-Forward Relaying and Cooperative Base-Stations
In this paper the benefits provided by multi-cell processing of signals transmitted by mobile terminals which are received via dedicated relay terminals (RTs) are assessed. Unlike previous works, each RT is assumed here to be capable of full-duplex operation and receives the transmission of adjacent relay terminals. Fo...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "o somekh_1", "name": "Oren Somekh", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "o simeone_1", "name": "Osvaldo Simeone", "publication_history": null, "h_index": null, "num_papers": null, ...
null
21010086
0705.0872
2007-05-07
Relativistic Tennis with Photons: Demonstration of Frequency Upshifting by a Relativistic Flying Mirror through Two Colliding Laser Pulses
Since the advent of chirped pulse amplification1 the peak power of lasers has grown dramatically and opened the new branch of high field science, delivering the focused irradiance, electric fields of which drive electrons into the relativistic regime. In a plasma wake wave generated by such a laser, modulations of the ...
[ "physics.plasm-ph", "physics.gen-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "m kando_1", "name": "Masaki Kando", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "y fukuda_2", "name": "Yuji Fukuda", "publication_history": null, "h_index": null, "num_papers": null, "nu...
null
10163322
0705.0832
2007-05-07
A Berry-Esseen type inequality for convex bodies with an unconditional basis
We provide a sharp rate of convergence in the central limit theorem for random vectors with an unconditional, log-concave density. The argument relies on analysis of the Neumann laplacian on convex domains and on the theory of optimal transportation of measures.
[ "math.PR", "math.MG" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
12618938
0705.1088
2007-05-08
L and T dwarfs in the Hyades and Ursa Major moving groups
We have used the moving cluster method to identify three L dwarfs and one T dwarf in the Ursa Major/Sirius moving group (age 400 Myr). Five L dwarfs and two T dwarfs are found to belong to the Hyades moving group (age 625 Myr). These L and T dwarfs define 400- and 625- Myr empirical isochrones, assuming that they have ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14576205
0705.1132
2007-05-08
Model-independent constraints on reionization from large-scale CMB polarization
On large angular scales, the polarization of the CMB contains information about the evolution of the average ionization during the epoch of reionization. Interpretation of the polarization spectrum usually requires the assumption of a fixed functional form for the evolution, e.g. instantaneous reionization. We develop ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14689993
0705.1034
2007-05-08
The 2003 Outburst of the X-ray Transient H 1743-322: Comparisons with the Black Hole Microquasar XTE J1550-564
The bright X-ray transient H 1743-322 was observed daily by the Rossi X-ray Timing Explorer (RXTE) during most of its 8-month outburst in 2003. We present a detailed spectral analysis and a supporting timing analysis of all of these data, and we discuss the behavior and evolution of the source in terms of the three pri...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
9389180
0705.1158
2007-05-08
Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
We study a class of metric-variation f(R) models that accelerates the expansion without a cosmological constant and satisfies both cosmological and solar-system tests in the small-field limit of the parameter space. Solar-system tests alone place only weak bounds on these models, since the additional scalar degree of f...
[ "astro-ph", "gr-qc", "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
9986237
0705.1159
2007-05-08
Ordering Finite-State Markov Channels by Mutual Information
In previous work, an ordering result was given for the symbolwise probability of error using general Markov channels, under iterative decoding of LDPC codes. In this paper, the ordering result is extended to mutual information, under the assumption of an iid input distribution. For certain channels, in which the capaci...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "a eckford_1", "name": "Andrew [\"W.\"] Eckford", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
14850189
0705.1372
2007-05-09
Quantum Markovian Subsystems: Invariance, Attractivity, and Control
We characterize the dynamical behavior of continuous-time, Markovian quantum systems with respect to a subsystem of interest. Markovian dynamics describes a wide class of open quantum systems of relevance to quantum information processing, subsystem encodings offering a general pathway to faithfully represent quantum i...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
3263224
0705.1227
2007-05-09
Rate Adaptation for Cognitive Radio under Interference from Primary Spectrum User
A cognitive radio can operate as a secondary system in a given spectrum. This operation should use limited power in order not to disturb the communication by primary spectrum user. Under such conditions, in this paper we investigate how to maximize the spectral efficiency in the secondary system. A secondary receiver o...
[ "cs.IT", "cs.NI", "math.IT" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "p popovski_1", "name": "Petar Popovski", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "h yomo_1", "name": "Hiroyuki Yomo", "publication_history": null, "h_index": null, "num_papers": null, ...
null
393051
0705.1252
2007-05-09
The Tasaki-Crooks quantum fluctuation theorem
Starting out from the recently established quantum correlation function expression of the characteristic function for the work performed by a force protocol on the system [cond-mat/0703213] the quantum version of the Crooks fluctuation theorem is shown to emerge almost immediately by the mere application of an inverse ...
[ "cond-mat.stat-mech" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1627694
0705.1336
2007-05-09
Diversity-Multiplexing Tradeoff via Asymptotic Analysis of Large MIMO Systems
Diversity-multiplexing tradeoff (DMT) presents a compact framework to compare various MIMO systems and channels in terms of the two main advantages they provide (i.e. high data rate and/or low error rate). This tradeoff was characterized asymptotically (SNR-> infinity) for i.i.d. Rayleigh fading channel by Zheng and Ts...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
5222376
0705.1523
2007-05-10
Statistical mechanics and stability of a model eco-system
We study a model ecosystem by means of dynamical techniques from disordered systems theory. The model describes a set of species subject to competitive interactions through a background of resources, which they feed upon. Additionally direct competitive or co-operative interaction between species may occur through a ra...
[ "q-bio.PE", "cond-mat.dis-nn", "cond-mat.stat-mech" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119596197
0705.1388
2007-05-10
Some properties of the resonant state in quantum mechanics and its computation
The resonant state of the open quantum system is studied from the viewpoint of the outgoing momentum flux. We show that the number of particles is conserved for a resonant state, if we use an expanding volume of integration in order to take account of the outgoing momentum flux; the number of particles would decay expo...
[ "quant-ph", "cond-mat.mes-hall", "cond-mat.stat-mech", "nucl-th", "physics.atom-ph" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "n hatano_1", "name": "Naomichi Hatano", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "k sasada_1", "name": "Keita Sasada", "publication_history": null, "h_index": null, "num_papers": null, ...
null
17750599
0705.1444
2007-05-10
The dynamical status of the galaxy cluster Abell 115
We present the results of a new spectroscopic and photometric survey of the hot, binary X-ray cluster A115 at z=0.193, containing a radio relic. We combine galaxy velocity and position information to select 85 galaxies recognized as cluster members (from 115 galaxies observed at TNG telescope), determine global dynamic...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119128746
0705.1475
2007-05-10
Statistical significance of rich-club phenomena in complex networks
We propose that the rich-club phenomena in complex networks should be defined in the spirit of bootstrapping, in which a null model is adopted to assess the statistical significance of the rich-club detected. Our method can be served as a definition of rich-club phenomenon and is applied to analyzing three real network...
[ "physics.soc-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
17368958
0705.1601
2007-05-11
Proof of the Double Bubble Conjecture in R^n
The least-area hypersurface enclosing and separating two given volumes in R^n is the standard double bubble.
[ "math.MG" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
3263931
0705.1682
2007-05-11
Capacity of Underspread Noncoherent WSSUS Fading Channels under Peak Signal Constraints
We characterize the capacity of the general class of noncoherent underspread wide-sense stationary uncorrelated scattering (WSSUS) time-frequency-selective Rayleigh fading channels, under peak constraints in time and frequency and in time only. Capacity upper and lower bounds are found which are explicit in the channel...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "g durisi_1", "name": "Giuseppe Durisi", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "h bölcskei_1", "name": "Helmut Bölcskei", "publication_history": null, "h_index": null, "num_papers": nul...
null
9551476
0705.1691
2007-05-11
Global polarization measurement in Au+Au collisions
The system created in non-central relativistic nucleus-nucleus collisions possesses large orbital angular momentum. Due to spin-orbit coupling, particles produced in such a system could become globally polarized along the direction of the system angular momentum. We present the results of Lambda and anti-Lambda hyperon...
[ "nucl-ex" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14540176
0705.1740
2007-05-11
General Quantum Modeling of Combining Concepts: A Quantum Field Model in Fock Space
We extend a quantum model in Hilbert space developed in Aerts (2007a) into a quantum field theoric model in Fock space for the modeling of the combination of concepts. Items and concepts are represented by vectors in Fock space and membership weights of items are modeled by quantum probabilities. We apply this theory t...
[ "physics.gen-ph", "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
88512194
0705.1701
2007-05-11
Universality results for largest eigenvalues of some sample covariance matrix ensembles
For sample covariance matrices with iid entries with sub-Gaussian tails, when both the number of samples and the number of variables become large and the ratio approaches to one, it is a well-known result of A. Soshnikov that the limiting distribution of the largest eigenvalue is same as the of Gaussian samples. In thi...
[ "math.PR", "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
118628788
0705.1745
2007-05-12
Nonlocal Double-Slit Interference with Pseudothermal Light
We perform a nonlocal double-slit interference experiment with pseudothermal light. The experimental result exhibits a typical double-slit interference fringe in the intensity correlation measurement, in agreement with the theoretical analysis by means of the property of the second-order spatial correlation of field.
[ "quant-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "l gao_4", "name": "Lu Gao", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "j xiong_19", "name": "Jun Xiong", "publication_history": null, "h_index": null, "num_papers": null, "num_citation...
null
18141012
0705.1794
2007-05-12
Semimartingale Stochastic Approximation Procedures and Recursive Estimation
The semimartingale stochastic approximation procedure, namely, the Robbins-Monro type SDE is introduced which naturally includes both generalized stochastic approximation algorithms with martingale noises and recursive parameter estimation procedures for statistical models associated with semimartingales. General resul...
[ "math.PR", "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
12792701
0705.1806
2007-05-13
Transversals in trees
A transversal in a rooted tree is any set of nodes that meets every path from the root to a leaf. We let c(T,k) denote the number of transversals of size k in a rooted tree T. We define a partial order on the set of all rooted trees with n nodes by saying that a tree T succeeds a tree T' if c(T,k) is at least c(T',k) f...
[ "math.CO" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "v campos_1", "name": "Victor [\"A.\"] Campos", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "v chvátal_0", "name": "Vasek Chvátal", "publication_history": null, "h_index": null, "num_papers":...
null
13819690
0705.2024
2007-05-14
An Area Law for One Dimensional Quantum Systems
We prove an area law for the entanglement entropy in gapped one dimensional quantum systems. The bound on the entropy grows surprisingly rapidly with the correlation length; we discuss this in terms of properties of quantum expanders and present a conjecture on completely positive maps which may provide an alternate wa...
[ "quant-ph", "cond-mat.str-el", "math-ph", "math.MP" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14187878
0705.1856
2007-05-14
A model for the time uncertainty measurements in the Auger surface detector array
The precise determination of the arrival direction of cosmic rays is a fundamental prerequisite for the search for sources or the study of their anisotropies on the sky. One of the most important aspects to achieve an optimal measurement of these directions is to properly take into account the measurement uncertainties...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1673779
0705.1990
2007-05-14
Identification of the dominant precession damping mechanism in Fe, Co, and Ni by first-principles calculations
The Landau-Lifshitz equation reliably describes magnetization dynamics using a phenomenological treatment of damping. This paper presents first-principles calculations of the damping parameters for Fe, Co, and Ni that quantitatively agree with existing ferromagnetic resonance measurements. This agreement establishes th...
[ "cond-mat.str-el", "cond-mat.mtrl-sci" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
47136048
0705.2011
2007-05-14
Multi-Dimensional Recurrent Neural Networks
Recurrent neural networks (RNNs) have proved effective at one dimensional sequence learning tasks, such as speech and online handwriting recognition. Some of the properties that make RNNs suitable for such tasks, for example robustness to input warping, and the ability to access contextual information, are also desirab...
[ "cs.AI", "cs.CV" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
579380
0705.1970
2007-05-14
A Closed-Form Method for LRU Replacement under Generalized Power-Law Demand
We consider the well known \emph{Least Recently Used} (LRU) replacement algorithm and analyze it under the independent reference model and generalized power-law demand. For this extensive family of demand distributions we derive a closed-form expression for the per object steady-state hit ratio. To the best of our know...
[ "cs.DS" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "n laoutaris_1", "name": "Nikolaos Laoutaris", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
1727
0705.1922
2007-05-14
Crystallization in large wireless networks
We analyze fading interference relay networks where M single-antenna source-destination terminal pairs communicate concurrently and in the same frequency band through a set of K single-antenna relays using half-duplex two-hop relaying. Assuming that the relays have channel state information (CSI), it is shown that in t...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1883112
0705.1914
2007-05-14
Measurement of time--varying Multiple--Input Multiple--Output Channels
We derive a criterion on the measurability / identifiability of Multiple--Input Multiple--Output (MIMO) channels based on the size of the so-called spreading support of its subchannels. Novel MIMO transmission techniques provide high-capacity communication channels in time-varying environments and exact knowledge of th...
[ "math.FA", "math.CA" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
3266051
0705.1919
2007-05-14
Optimal Watermark Embedding and Detection Strategies Under Limited Detection Resources
An information-theoretic approach is proposed to watermark embedding and detection under limited detector resources. First, we consider the attack-free scenario under which asymptotically optimal decision regions in the Neyman-Pearson sense are proposed, along with the optimal embedding rule. Later, we explore the case...
[ "cs.IT", "cs.CR", "math.IT" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
18030712
0705.2017
2007-05-15
High Metallicity of the X-Ray Gas up to the Virial Radius of a Binary Cluster of Galaxies: Evidence of Galactic Superwinds at High-Redshift
We present an analysis of a Suzaku observation of the link region between the galaxy clusters A399 and A401. We obtained the metallicity of the intracluster medium (ICM) up to the cluster virial radii for the first time. We determine the metallicity where the virial radii of the two clusters cross each other (~2 Mpc aw...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
10082002
0705.2057
2007-05-15
The unified geometric theory of mesoscopic stochastic pumps and reversible ratchets
We construct a unifying theory of geometric effects in mesoscopic stochastic kinetics. We demonstrate that the adiabatic pump and the reversible ratchet effects, as well as similar new phenomena in other domains, such as in epidemiology, all follow from geometric phase contributions to the effective action in the stoch...
[ "cond-mat.stat-mech", "q-bio.QM" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "n sinitsyn_1", "name": "Nikolai [\"A.\"] Sinitsyn", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "i nemenman_1", "name": "Ilya Nemenman", "publication_history": null, "h_index": null, "num_pa...
null
14655245
0705.2072
2007-05-15
The Multiscale Morphology Filter: Identifying and Extracting Spatial Patterns in the Galaxy Distribution
We present here a new method, MMF, for automatically segmenting cosmic structure into its basic components: clusters, filaments, and walls. Importantly, the segmentation is scale independent, so all structures are identified without prejudice as to their size or shape. The method is ideally suited for extracting catalo...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14122357
0705.2205
2007-05-15
From Nondeterministic B\"uchi and Streett Automata to Deterministic Parity Automata
In this paper we revisit Safra's determinization constructions for automata on infinite words. We show how to construct deterministic automata with fewer states and, most importantly, parity acceptance conditions. Determinization is used in numerous applications, such as reasoning about tree automata, satisfiability of...
[ "cs.LO", "cs.FL" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
17555935
0705.2110
2007-05-15
Optimal quantization for the pricing of swing options
In this paper, we investigate a numerical algorithm for the pricing of swing options, relying on the so-called optimal quantization method. The numerical procedure is described in details and numerous simulations are provided to assert its efficiency. In particular, we carry out a comparison with the Longstaff-Schwartz...
[ "q-fin.PR", "math.PR" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1750736
0705.2238
2007-05-15
A unified model for AGN feedback in cosmological simulations of structure formation
We discuss a numerical model for black hole growth and its associated feedback processes that for the first time allows cosmological simulations of structure formation to self-consistently follow the build up of the cosmic population of galaxies and active galactic nuclei. Our model assumes that seed black holes are pr...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14030530
0705.2253
2007-05-15
On the convergence to equilibrium of Kac's random walk on matrices
We consider Kac's random walk on $n$-dimensional rotation matrices, where each step is a random rotation in the plane generated by two randomly picked coordinates. We show that this process converges to the Haar measure on $\mathit{SO}(n)$ in the $L^2$ transportation cost (Wasserstein) metric in $O(n^2\ln n)$ steps. We...
[ "math.PR" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15295085
0705.2147
2007-05-15
On the freezing of variables in random constraint satisfaction problems
The set of solutions of random constraint satisfaction problems (zero energy groundstates of mean-field diluted spin glasses) undergoes several structural phase transitions as the amount of constraints is increased. This set first breaks down into a large number of well separated clusters. At the freezing transition, w...
[ "cond-mat.stat-mech", "cond-mat.dis-nn", "cs.CC", "math.PR" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
58893
0705.2106
2007-05-15
Scientific citations in Wikipedia
The Internet-based encyclopaedia Wikipedia has grown to become one of the most visited web-sites on the Internet. However, critics have questioned the quality of entries, and an empirical study has shown Wikipedia to contain errors in a 2005 sample of science entries. Biased coverage and lack of sources are among the "...
[ "cs.DL", "cs.IR" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "f nielsen_1", "name": "Finn [\"Årup\"] Nielsen", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
12269508
0705.2183
2007-05-15
On Resonant Leptogenesis
It has been recently shown that the quantum Boltzmann equations may be relevant for the leptogenesis scenario. In particular, they lead to a time-dependent CP asymmetry which depends upon the previous dynamics of the system. This memory effect in the CP asymmetry is particularly important in resonant leptogenesis where...
[ "hep-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119708330
0705.2269
2007-05-16
Direct cosmological simulations of the growth of black holes and galaxies
We investigate the coupled formation and evolution of galaxies and their embedded supermassive black holes using state-of-the-art hydrodynamic simulations of cosmological structure formation. For the first time, we self-consistently follow the dark matter dynamics, radiative gas cooling, star formation, as well as blac...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14690935
0705.2302
2007-05-16
On randomized stopping
A general result on the method of randomized stopping is proved. It is applied to optimal stopping of controlled diffusion processes with unbounded coefficients to reduce it to an optimal control problem without stopping. This is motivated by recent results of Krylov on numerical solutions to the Bellman equation.
[ "math.PR", "math.OC" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "i gyongy_1", "name": "Istvan Gyongy", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "d šiška_1", "name": "David Šiška", "publication_history": null, "h_index": null, "num_papers": null, "n...
null
198952
0705.2262
2007-05-16
Variance reduction for particle filters of systems with time-scale separation
We present a particle filter construction for a system that exhibits time-scale separation. The separation of time-scales allows two simplifications that we exploit: i) The use of the averaging principle for the dimensional reduction of the system needed to solve for each particle and ii) the factorization of the trans...
[ "math.NA", "math.ST", "stat.CO", "stat.TH" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "d givon_0", "name": "Dror Givon", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "p stinis_1", "name": "Panagiotis Stinis", "publication_history": null, "h_index": null, "num_papers": null, ...
null
52396178
0705.2354
2007-05-16
Nonlinear evolution of a morphological instability in a strained epitaxial film
A strained epitaxial film deposited on a deformable substrate undergoes a morphological instability relaxing the elastic energy by surface diffusion. The nonlinear and nonlocal dynamical equations of such films with wetting interactions are derived and solved numerically in two and three dimensions. Above some critical...
[ "cond-mat.stat-mech", "cond-mat.mtrl-sci" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
16791429
0705.2448
2007-05-16
Superluminal Radio Features in the M87 Jet and the Site of Flaring TeV Gamma-ray Emission
Superluminal motion is a common feature of radio jets in powerful gamma-ray emitting active galactic nuclei. Conventionally, the variable emission is assumed to originate near the central supermassive black-hole where the jet is launched on parsec scales or smaller. Here, we report the discovery of superluminal radio f...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14370937
0705.2430
2007-05-16
Poincare recurrences of Schwarzschild black holes
We discuss massive scalar perturbations of a Schwarzschild black hole. We argue that quantum effects alter the effective potential near the horizon resulting in Poincare recurrences in Green functions. Results at the semi-classical level are independent of the details of the modification of the potential provided its m...
[ "hep-th", "gr-qc" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "g siopsis_1", "name": "George Siopsis", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
18769528
0705.2425
2007-05-17
Singlet Higgs Phenomenology and the Electroweak Phase Transition
We study the phenomenology of gauge singlet extensions of the Standard Model scalar sector and their implications for the electroweak phase transition. We determine the conditions on the scalar potential parameters that lead to a strong first order phase transition as needed to produce the observed baryon asymmetry of ...
[ "hep-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119686410
0705.2518
2007-05-17
Spectroscopy of Strong-Pulse Superradiance in a Bose-Einstein condensate
We study experimentally superradiance in a Bose-Einstein condensate using a two-frequency pump beam. By controlling the frequency difference between the beam components, we measure the spectrum of the backward (energy-mismatched) superradiant atomic modes. In addition, we show that the populations of these modes displa...
[ "cond-mat.other" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "n bar-gill_1", "name": "Nir Bar-Gill", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "e rowen_1", "name": "Eitan [\"Emanuel\"] Rowen", "publication_history": null, "h_index": null, "num_papers...
null
15717733
0705.2514
2007-05-17
The light curve of the companion to PSR B1957+20
We present a new analysis of the light curve for the secondary star in the eclipsing binary millisecond pulsar system PSR B1957+20. Combining previous data and new data points at minimum from the Hubble Space Telescope, we have 100% coverage in the R-band. We also have a number of new K_s-band data points, which we use...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
266
0705.2626
2007-05-17
Block Locally Optimal Preconditioned Eigenvalue Xolvers (BLOPEX) in hypre and PETSc
We describe our software package Block Locally Optimal Preconditioned Eigenvalue Xolvers (BLOPEX) publicly released recently. BLOPEX is available as a stand-alone serial library, as an external package to PETSc (``Portable, Extensible Toolkit for Scientific Computation'', a general purpose suite of tools for the scalab...
[ "cs.MS", "cs.NA" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1160335
0705.2605
2007-05-17
Sample eigenvalue based detection of high dimensional signals in white noise using relatively few samples
We present a mathematically justifiable, computationally simple, sample eigenvalue based procedure for estimating the number of high-dimensional signals in white noise using relatively few samples. The main motivation for considering a sample eigenvalue based scheme is the computational simplicity and the robustness to...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15197538
0705.2771
2007-05-18
Counting Chiral Operators in Quiver Gauge Theories
We discuss in detail the problem of counting BPS gauge invariant operators in the chiral ring of quiver gauge theories living on D-branes probing generic toric CY singularities. The computation of generating functions that include counting of baryonic operators is based on a relation between the baryonic charges in fie...
[ "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14099820
0705.2642
2007-05-18
Comments on the radio spectrum of HB 3
It has recently been suggested that the radio spectrum of the Galactic supernova remnant HB 3 shows flattening at higher frequencies (above about 1 GHz). Here I review the radio spectrum of HB 3, noting the difficulties in deriving accurate flux densities for this remnant, particularly at high frequencies, due to the p...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
22501169
0705.2746
2007-05-18
Neel order in square and triangular lattice Heisenberg models
Using examples of the square- and triangular-lattice Heisenberg models we demonstrate that the density matrix renormalization group method (DMRG) can be effectively used to study magnetic ordering in two-dimensional lattice spin models. We show that local quantities in DMRG calculations, such as the on-site magnetizati...
[ "cond-mat.str-el" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14207426
0705.2774
2007-05-18
Some Aspects of Measurement Error in Linear Regression of Astronomical Data
I describe a Bayesian method to account for measurement errors in linear regression of astronomical data. The method allows for heteroscedastic and possibly correlated measurement errors, and intrinsic scatter in the regression relationship. The method is based on deriving a likelihood function for the measured data, a...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14432520
0705.2745
2007-05-18
Long-Term Evolution of Massive Black Hole Binaries. III. Binary Evolution in Collisional Nuclei
[Abridged] In galactic nuclei with sufficiently short relaxation times, binary supermassive black holes can evolve beyond their stalling radii via continued interaction with stars. We study this "collisional" evolutionary regime using both fully self-consistent N-body integrations and approximate Fokker-Planck models. ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1561639
0705.2765
2007-05-18
On the monotonization of the training set
We consider the problem of minimal correction of the training set to make it consistent with monotonic constraints. This problem arises during analysis of data sets via techniques that require monotone data. We show that this problem is NP-hard in general and is equivalent to finding a maximal independent set in specia...
[ "cs.LG", "cs.AI" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "r takhanov_1", "name": "Rustem Takhanov", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
12293101
0705.2677
2007-05-18
On Asymptotic Proximity of Distributions
We consider some general facts concerning convergence P_{n}-Q_{n}\to 0 as n\to \infty, where P_{n} and Q_{n} are probability measures in a complete separable metric space. The main point is that the sequences {P_{n}} and {Q_{n}} are not assumed to be tight. We compare different possible definitions of the above converg...
[ "math.PR" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
7216177
0705.2787
2007-05-18
Worst-Case Background Knowledge for Privacy-Preserving Data Publishing
Recent work has shown the necessity of considering an attacker's background knowledge when reasoning about privacy in data publishing. However, in practice, the data publisher does not know what background knowledge the attacker possesses. Thus, it is important to consider the worst-case. In this paper, we initiate a f...
[ "cs.DB" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "d martin_15", "name": "David [\"J.\"] Martin", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "d kifer_1", "name": "Daniel Kifer", "publication_history": null, "h_index": null, "num_papers": nu...
null
8239247
0705.2756
2007-05-18
Black Hole Motion as Catalyst of Orbital Resonances
The motion of a black hole about the centre of gravity of its host galaxy induces a strong response from the surrounding stellar population. We treat the case of a harmonic potential analytically and show that half of the stars on circular orbits in that potential shift to an orbit of lower energy, while the other half...
[ "astro-ph", "gr-qc" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "2587458", "num_citations": null }, { "corpus_id": "315189", "num_citations": null } ]
[ { "author_id": "c boily_0", "name": "Christian [\"M.\"] Boily", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "t padmanabhan_1", "name": "T. Padmanabhan", "publication_history": null, "h_index": null, "num_pa...
null
5469786
0705.2832
2007-05-19
Multiwavelength study of massive galaxies at z~2. II. Widespread Compton thick AGN and the concurrent growth of black holes and bulges
Approximately 20-30% of 1.4<z<2.5 galaxies with K<22 (Vega) detected with Spitzer MIPS at 24um show excess mid-IR emission relative to that expected based on the rates of star formation measured from other multiwavelength data.These galaxies also display some near-IR excess in Spitzer IRAC data, with a spectral energy ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119171066
0705.2887
2007-05-20
Exclusive photoproduction of $J/\psi$ in proton-proton and proton-antiproton scattering
Protons and antiprotons at collider energies are a source of high energy Weizs\"acker--Williams photons. This may open a possibility to study exclusive photoproduction of heavy vector mesons at energies much larger than possible at the HERA accelerator. Here we present a detailed investigation of the exclusive $J/\psi$...
[ "hep-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
19029444
0705.2976
2007-05-21
Optimal Stopping with Rank-Dependent Loss
For $\tau$ a stopping rule adapted to a sequence of $n$ iid observations, we define the loss to be $\ex [ q(R_\tau)]$, where $R_j$ is the rank of the $j$th observation, and $q$ is a nondecreasing function of the rank. This setting covers both the best choice problem with $q(r)={\bf 1}(r>1)$, and Robbins' problem with $...
[ "math.PR" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
6886263
0705.3158
2007-05-21
SubmilliJansky Transients in Archival Radio Observations
[ABRIDGED] We report the results of a 944-epoch survey for transient sources with archival data from the Very Large Array spanning 22 years with a typical epoch separation of 7 days. Observations were obtained at 5 or 8.4 GHz for a single field of view with a full-width at half-maximum of 8.6' and 5.1', respectively, a...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
2677737
0705.3063
2007-05-21
The Evolution of Protoplanetary Disks Around Millisecond Pulsars: The PSR 1257 +12 System
We model the evolution of protoplanetary disks surrounding millisecond pulsars, using PSR 1257+12 as a test case. Initial conditions were chosen to correspond to initial angular momenta expected for supernova-fallback disks and disks formed from the tidal disruption of a companion star. Models were run under two models...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
3502
0705.3058
2007-05-21
On the Shannon capacity and queueing stability of random access multicast
We study and compare the Shannon capacity region and the stable throughput region for a random access system in which source nodes multicast their messages to multiple destination nodes. Under an erasure channel model which accounts for interference and allows for multipacket reception, we first characterize the Shanno...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "16215091", "num_citations": null } ]
[ { "author_id": "b shrader_1", "name": "Brooke Shrader", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a ephremides_1", "name": "Anthony Ephremides", "publication_history": null, "h_index": null, "num_papers"...
null
8469960
0705.3025
2007-05-21
Spectral Efficiency of Spectrum Pooling Systems
In this contribution, we investigate the idea of using cognitive radio to reuse locally unused spectrum to increase the total system capacity. We consider a multiband/wideband system in which the primary and cognitive users wish to communicate to different receivers, subject to mutual interference and assume that each ...
[ "cs.IT", "cs.NI", "math.IT" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "m haddad_1", "name": "Majed Haddad", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a hayar_0", "name": "Aawatif Hayar", "publication_history": null, "h_index": null, "num_papers": null, "...
null
14022220
0705.3102
2007-05-22
Track reconstruction in the emulsion-lead target of the OPERA experiment using the ESS microscope
The OPERA experiment, designed to conclusively prove the existence of $\rm \nu_\mu \to \nu_\tau$ oscillations in the atmospheric sector, makes use of a massive lead-nuclear emulsion target to observe the appearance of $\rm \nu_\tau$'s in the CNGS $\rm \nu_\mu$ beam. The location and analysis of the neutrino interaction...
[ "physics.ins-det" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "l arrabito_1", "name": "L. Arrabito", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "c bozza_1", "name": "C. Bozza", "publication_history": null, "h_index": null, "num_papers": null, "num_...
null
17004775
0705.3139
2007-05-22
Small time Edgeworth-type expansions for weakly convergent nonhomogeneous Markov chains
We consider triangular arrays of Markov chains that converge weakly to a diffusion process. Second order Edgeworth type expansions for transition densities are proved. The paper differs from recent results in two respects. We allow nonhomogeneous diffusion limits and we treat transition densities with time lag convergi...
[ "math.ST", "math.PR", "stat.TH" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "v konakov_1", "name": "Valentin [\"D.\"] Konakov", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "e mammen_1", "name": "Enno Mammen", "publication_history": null, "h_index": null, "num_papers"...
null
143482
0705.3252
2007-05-22
The Hilbert 3/2 Structure and Weil-Petersson Metric on the Space of the Diffeomorphisms of the Circle Modulo Conformal Maps
We gave a new very simple proof that the completion of the space of the diffeomorphism of the circle modulo conformal maps with respect to the Weil-Petersson Metric is a complex analytic manifold modeled on the Hilbert space with 3/2 Sobolev norm. Our proof is based on the analogue of the Hadamard Theorem that the expo...
[ "math-ph", "math.MP" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "15634448", "num_citations": null } ]
[ { "author_id": "m schonbek_1", "name": "Maria [\"E.\"] Schonbek", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a todorov_1", "name": "Andrey [\"N.\"] Todorov", "publication_history": null, "h_index": null, ...
null
119314900
0705.3122
2007-05-22
Plastic Response of a 2D Amorphous Solid to Quasi-Static Shear : II - Dynamical Noise and Avalanches in a Mean Field Model
We build a minimal, mean-field, model of plasticity of amorphous solids, based upon a phenomenology of dissipative events derived, in a preceding paper [A. Lemaitre, C. Caroli, arXiv:0705.0823] from extensive molecular simulations. It reduces to the dynamics of an ensemble of identical shear transformation zones intera...
[ "cond-mat.dis-nn", "cond-mat.stat-mech" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
499729
0705.3099
2007-05-22
Distortion Minimization in Gaussian Layered Broadcast Coding with Successive Refinement
A transmitter without channel state information (CSI) wishes to send a delay-limited Gaussian source over a slowly fading channel. The source is coded in superimposed layers, with each layer successively refining the description in the previous one. The receiver decodes the layers that are supported by the channel real...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "c ng_4", "name": "Chris [\"T.\",\"K.\"] Ng", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "d gündüz_1", "name": "Deniz Gündüz", "publication_history": null, "h_index": null, "num_papers": nul...
null
116987137
0705.3251
2007-05-22
Tevatron-for-LHC Report: Top and Electroweak Physics
The top quark and electroweak bosons (W and Z) represent the most massive fundamental particles yet discovered, and as such refer directly to the Standard Model's greatest remaining mystery: the mechanism by which all particles gained mass. This report summarizes the work done within the top-ew group of the Tevatron-fo...
[ "hep-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "c gerber_1", "name": "Cecilia [\"Elena\"] Gerber", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "p murat_1", "name": "P Murat", "publication_history": null, "h_index": null, "num_papers": nul...
null
285279
0705.3202
2007-05-22
A mirror symmetric solution to the quantum Toda lattice
We use representation theory to construct integral formulas for solutions to the quantum Toda lattice in general type. This result generalizes work of Givental for SL(n)/B in a uniform way to arbitrary type and can be interpreted as a kind of mirror theorem for the full flag variety G/B. We also prove the existence of ...
[ "math.RT" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119585310
0705.3219
2007-05-22
The Accelerated Kepler Problem
The accelerated Kepler problem is obtained by adding a constant acceleration to the classical two-body Kepler problem. This setting models the dynamics of a jet-sustaining accretion disk and its content of forming planets as the disk loses linear momentum through the asymmetric jet-counterjet system it powers. The dyna...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
7015905
0705.3229
2007-05-22
Observation and Properties of L=1 B_1 and B_2* Mesons
Excited B mesons B_1 and B_2* are observed directly for the first time as two separate states in fully reconstructed decays to B+(*) pi-. The mass of B_1 is measured to be (5720.6 +- 2.4 +- 1.4) MeV/c^2 and the mass difference DeltaM between B_2* and B_1 is (26.2 +- 3.1 +- 0.9) MeV/c^2, giving the mass of the B_2* as (...
[ "hep-ex" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "v abazov_1", "name": "Victor [\"Mukhamedovich\"] Abazov", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "b abbott_2", "name": "B. Abbott", "publication_history": null, "h_index": null, "num_pa...
null
11364542
0705.3042
2007-05-22
How robust are the constraints on cosmology and galaxy evolution from the lens-redshift test?
The redshift distribution of galaxy lenses in known gravitational lens systems provides a powerful test that can potentially discriminate amongst cosmological models. However, applications of this elegant test have been curtailed by two factors: our ignorance of how galaxies evolve with redshift, and the absence of met...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
17377891
0705.3221
2007-05-22
Right-Handed Neutrinos at LHC and the Mechanism of Neutrino Mass Generation
We consider the possibility to detect right-handed neutrinos, which are mostly singlets of the Standard Model gauge group, at future accelerators. Substantial mixing of these neutrinos with the active neutrinos requires a cancellation of different contributions to the light neutrino mass matrix at the level of 10^{-8}....
[ "hep-ph", "hep-ex" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
821160
0705.3404
2007-05-23
Plasmarings as dual black rings
We construct solutions to the relativistic Navier-Stokes equations that describe the long wavelength collective dynamics of the deconfined plasma phase of N=4 Yang Mills theory compactified down to d=3 on a Scherk-Schwarz circle and higher dimensional generalisations. Our solutions are stationary, axially symmetric spi...
[ "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14095059
0705.3370
2007-05-23
Adaptive classification of temporal signals in fixed-weights recurrent neural networks: an existence proof
We address the important theoretical question why a recurrent neural network with fixed weights can adaptively classify time-varied signals in the presence of additive noise and parametric perturbations. We provide a mathematical proof assuming that unknown parameters are allowed to enter the signal nonlinearly and the...
[ "math.OC", "math.DS" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "16711781", "num_citations": null } ]
[ { "author_id": "i tyukin_1", "name": "Ivan [\"Y.\"] Tyukin", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "d prokhorov_1", "name": "Danil [\"V.\"] Prokhorov", "publication_history": null, "h_index": null, "n...
null
115154849
0705.3278
2007-05-23
On the Thermal Symmetry of the Markovian Master Equation
The quantum Markovian master equation of the reduced dynamics of a harmonic oscillator coupled to a thermal reservoir is shown to possess thermal symmetry. This symmetry is revealed by a Bogoliubov transformation that can be represented by a hyperbolic rotation acting on the Liouville space of the reduced dynamics. The...
[ "math-ph", "math.MP" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "b tay_1", "name": "Buang [\"Ann\"] Tay", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "t petrosky_1", "name": "Tomio Petrosky", "publication_history": null, "h_index": null, "num_papers": nul...
null
115154275
0705.3419
2007-05-23
Non-commutative Donaldson-Thomas theory and the conifold
Given a quiver algebra A with relations defined by a superpotential, this paper defines a set of invariants of A counting framed cyclic A-modules, analogous to rank-1 Donaldson-Thomas invariants of Calabi-Yau threefolds. For the special case when A is the non-commutative crepant resolution of the threefold ordinary dou...
[ "math.AG", "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
8460061
0705.3294
2007-05-23
Shear-Induced Chaos
Guided by a geometric understanding developed in earlier works of Wang and Young, we carry out some numerical studies of shear-induced chaos. The settings considered include periodic kicking of limit cycles, random kicks at Poisson times, and continuous-time driving by white noise. The forcing of a quasi-periodic model...
[ "math.DS", "math-ph", "math.MP", "nlin.CD" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1586691
0705.3503
2007-05-23
Making Random Choices Invisible to the Scheduler
When dealing with process calculi and automata which express both nondeterministic and probabilistic behavior, it is customary to introduce the notion of scheduler to solve the nondeterminism. It has been observed that for certain applications, notably those in security, the scheduler needs to be restricted so not to r...
[ "cs.CR", "cs.LO" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "k chatzikokolakis_1", "name": "Konstantinos Chatzikokolakis", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "c palamidessi_1", "name": "Catuscia Palamidessi", "publication_history": null, "h_index...
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