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14056495
0905.1328
2009-05-08
Spitzer SAGE Infrared Photometry of Massive Stars in the Large Magellanic Cloud
We present a catalog of 1750 massive stars in the Large Magellanic Cloud, with accurate spectral types compiled from the literature, and a photometric catalog for a subset of 1268 of these stars, with the goal of exploring their infrared properties. The photometric catalog consists of stars with infrared counterparts i...
[ "astro-ph.SR", "astro-ph.GA" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
10480423
0905.1183
2009-05-08
Nonlocal minimal surfaces
The de Giorgi theory for minimal surfaces consists in studying sets whose indicator function is a (local) minimum of the BV norm. In this paper we replace the BV norm by the $H^\sigma$ norm, with $\sigma<1/2$, and try to understand what the minimisers look like. Parallel to the de Giorgi theory we prove that, if the bo...
[ "math.AP" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
13898403
0905.1180
2009-05-08
Bounding the Temperatures of Black Holes Dual to Strongly Coupled Field Theories on Flat Spacetime
We show that AdS black holes dual to field theories on flat spacetime, as used in applications of the AdS/CFT correspondence to strong interaction and condensed matter physics, have temperatures with positive lower bounds. There are two distinct effects involved. For low chemical potentials in the dual field theory, th...
[ "hep-th", "gr-qc", "hep-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1440940
0905.1378
2009-05-09
A class of asymptotic preserving schemes for kinetic equations and related problems with stiff sources
In this paper, we propose a general framework to design asymptotic preserving schemes for the Boltzmann kinetic kinetic and related equations. Numerically solving these equations are challenging due to the nonlinear stiff collision (source) terms induced by small mean free or relaxation time. We propose to penalize the...
[ "math.NA" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15970138
0905.1432
2009-05-09
Exact quantum dissipative dynamics under external time-dependent fields driving
Exact and nonperturbative quantum master equation can be constructed via the calculus on path integral. It results in hierarchical equations of motion for the reduced density operator. Involved are also a set of well--defined auxiliary density operators that resolve not just system--bath coupling strength but also memo...
[ "cond-mat.stat-mech" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "22178352", "num_citations": null } ]
[ { "author_id": "j xu_175", "name": "Jian Xu", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "r xu_54", "name": "Ruixue Xu", "publication_history": null, "h_index": null, "num_papers": null, "num_citations...
null
260492119
0905.1413
2009-05-09
Term Structure Models Driven by Wiener Process and Poisson Measures: Existence and Positivity
In the spirit of Bj\"ork-DiMasi-Kabanov-Runggaldier, we investigate term structure models driven by Wiener process and Poisson measures with forward curve dependent volatilities. This includes a full existence and uniqueness proof for the corresponding Heath--Jarrow--Morton type term structure equation. Furthermore, we...
[ "math.PR" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "d filipović_1", "name": "Damir Filipović", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "s tappe_1", "name": "Stefan Tappe", "publication_history": null, "h_index": null, "num_papers": null, ...
null
15042427
0905.1366
2009-05-09
Gradient estimate of an eigenfunction on a compact Riemannian manifold without boundary
Let $e_\l(x)$ be an eigenfunction with respect to the Laplace-Beltrami operator $\Delta_M$ on a compact Riemannian manifold $M$ without boundary: $\Delta_M e_\l=\l^2 e_\l$. We show the following gradient estimate of $e_\l$: for every $\l\geq 1$, there holds $\l\|e_\l\|_\infty/C\leq \|\nabla e_\l\|_\infty\leq C{\l}\|e_\...
[ "math.SP", "math.AP" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
117783
0905.1512
2009-05-10
A Nearly Optimal Construction of Flash Codes
Flash memory is a non-volatile computer memory comprised of blocks of cells, wherein each cell can take on q different values or levels. While increasing the cell level is easy, reducing the level of a cell can be accomplished only by erasing an entire block. Since block erasures are highly undesirable, coding schemes ...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "h mahdavifar_1", "name": "Hessam Mahdavifar", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "p siegel_1", "name": "Paul [\"H.\"] Siegel", "publication_history": null, "h_index": null, "num_pap...
null
16260183
0905.1486
2009-05-10
Estimator selection with respect to Hellinger-type risks
We observe a random measure $N$ and aim at estimating its intensity $s$. This statistical framework allows to deal simultaneously with the problems of estimating a density, the marginals of a multivariate distribution, the mean of a random vector with nonnegative components and the intensity of a Poisson process. Our e...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
85504897
0905.1349
2009-05-10
Separability criteria for genuine multiparticle entanglement
We present a method to derive separability criteria for the different classes of multiparticle entanglement, especially genuine multiparticle entanglement. The resulting criteria are necessary and sufficient for certain families of states. Further, the criteria are superior to all known entanglement criteria for many o...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
8944715
0905.1645
2009-05-11
Numerical analysis of nonlinear eigenvalue problems
We provide a priori error estimates for variational approximations of the ground state eigenvalue and eigenvector of nonlinear elliptic eigenvalue problems of the form $-{div} (A\nabla u) + Vu + f(u^2) u = \lambda u$, $\|u\|_{L^2}=1$. We focus in particular on the Fourier spectral approximation (for periodic problems) ...
[ "math.NA" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
88516821
0905.1540
2009-05-11
Supplementary material for Markov equivalence for ancestral graphs
We prove that the criterion for Markov equivalence provided by Zhao et al. (2005) may involve a set of features of a graph that is exponential in the number of vertices.
[ "stat.ML" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "r ali_4", "name": "R. [\"A.\"] Ali", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "t richardson_3", "name": "Thomas [\"S.\"] Richardson", "publication_history": null, "h_index": null, "num_pa...
null
11633506
0905.1574
2009-05-11
Inverse Problem of Cosmic-Ray Electron/Positron from Dark Matter
We discuss the possibility of solving the inverse problem of the cosmic-ray electron/positron from decaying/annihilating dark matter, and show simple analytic formulae to reconstruct the source spectrum of the electron/positron from the observed flux. We also illustrate our approach by applying the obtained formula to ...
[ "hep-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "k hamaguchi_3", "name": "Koichi Hamaguchi", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "k nakaji_1", "name": "Kouhei Nakaji", "publication_history": null, "h_index": null, "num_papers": nul...
null
2786439
0905.1478
2009-05-11
Search for dark photons from supersymmetric hidden valleys
We search for a new light gauge boson, a dark photon, with the D0 experiment. In the model we consider, supersymmetric partners are pair produced and cascade to lightest neutralinos that can decay into the hidden sector state plus either a photon or a dark photon. The dark photon decays through its mixing with a photon...
[ "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
10916354
0905.1643
2009-05-11
Fixed Point and Bregman Iterative Methods for Matrix Rank Minimization
The linearly constrained matrix rank minimization problem is widely applicable in many fields such as control, signal processing and system identification. The tightest convex relaxation of this problem is the linearly constrained nuclear norm minimization. Although the latter can be cast as a semidefinite programming ...
[ "math.OC", "cs.IT", "math.IT" ]
null
[ "target.author.publication_history.key_reference", "target.key_reference" ]
null
null
null
17995150
0905.1521
2009-05-11
Anomalous behavior of trapping on a fractal scale-free network
It is known that the heterogeneity of scale-free networks helps enhancing the efficiency of trapping processes performed on them. In this paper, we show that transport efficiency is much lower in a fractal scale-free network than in non-fractal networks. To this end, we examine a simple random walk with a fixed trap at...
[ "cond-mat.stat-mech" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "z zhang_150", "name": "Zhongzhi Zhang", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "w xie_42", "name": "Wenlei Xie", "publication_history": null, "h_index": null, "num_papers": null, "n...
null
117800117
0905.1596
2009-05-11
Post-adiabatic forces and Lagrangians with higher-order derivatives
We study a slow classical system [particle] coupled to a fast quantum system with discrete energy spectrum. We adiabatically exclude the quantum system and construct an autonomous dynamics for the classical particle in successive orders of the small ratio $\epsilon$ of the characteristic times. It is known that in the ...
[ "quant-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "a allahverdyan_1", "name": "Armen [\"E.\"] Allahverdyan", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "b mehmani_1", "name": "Bahar Mehmani", "publication_history": null, "h_index": null, "n...
null
23621
0905.1745
2009-05-11
Capacity of a Class of Symmetric SIMO Gaussian Interference Channels within O(1)
The N+1 user, 1 x N single input multiple output (SIMO) Gaussian interference channel where each transmitter has a single antenna and each receiver has N antennas is studied. The symmetric capacity within O(1) is characterized for the symmetric case where all direct links have the same signal-to-noise ratio (SNR) and a...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
115165321
0905.1626
2009-05-11
Perron-Frobenius theorem for nonnegative multilinear forms and extensions
We prove an analog of Perron-Frobenius theorem for multilinear forms with nonnegative coefficients, and more generally, for polynomial maps with nonnegative coefficients. We determine the geometric convergence rate of the power algorithm to the unique normalized eigenvector.
[ "math.SP", "math.NA" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
10119355
0905.1769
2009-05-11
Classification of Cellular Automata Rules Based on Their Properties
This paper presents a classification of Cellular Automata rules based on its properties at the nth iteration. Elaborate computer program has been designed to get the nth iteration for arbitrary 1-D or 2-D CA rules. Studies indicate that the figures at some particular iteration might be helpful for some specific applica...
[ "cs.DM" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "p choudhury_2", "name": "Pabitra [\"Pal\"] Choudhury", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "s sahoo_14", "name": "Sudhakar Sahoo", "publication_history": null, "h_index": null, "num_...
null
18283843
0905.1326
2009-05-11
Cosmological Tests of General Relativity with Future Tomographic Surveys
Future weak lensing surveys will map the evolution of matter perturbations and gravitational potentials, yielding a new test of general relativity on cosmic scales. They will probe the relations between matter overdensities, local curvature, and the Newtonian potential. These relations can be modified in alternative gr...
[ "astro-ph.CO", "gr-qc", "hep-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "g zhao_32", "name": "Gong-Bo Zhao", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "l pogosian_1", "name": "Levon Pogosian", "publication_history": null, "h_index": null, "num_papers": null, ...
null
17902801
0905.1728
2009-05-11
High Cadence Near Infrared Timing Observations of Extrasolar Planets: I. GJ 436b and XO-1b
Currently the only technique sensitive to Earth mass planets around nearby stars (that are too close for microlensing) is the monitoring of the transit time variations of the transiting extrasolar planets. We search for additional planets in the systems of the hot Neptune GJ 436b, and the hot-Jupiter XO-1b, using high ...
[ "astro-ph.EP", "astro-ph.IM" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
2754096
0905.1539
2009-05-11
Total variation bound for Kac's random walk
We show that the classical Kac's random walk on $(n-1)$-sphere $S^{n-1}$ starting from the point mass at $e_1$ mixes in $\mathcal{O}(n^5(\log n)^3)$ steps in total variation distance. The main argument uses a truncation of the running density after a burn-in period, followed by $\mathcal{L}^2$ convergence using the spe...
[ "math.PR" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
16771648
0905.1682
2009-05-11
Finding large average submatrices in high dimensional data
The search for sample-variable associations is an important problem in the exploratory analysis of high dimensional data. Biclustering methods search for sample-variable associations in the form of distinguished submatrices of the data matrix. (The rows and columns of a submatrix need not be contiguous.) In this paper ...
[ "q-bio.GN", "q-bio.QM" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15668832
0905.1692
2009-05-11
An ultra-deep near-infrared spectrum of a compact quiescent galaxy at z=2.2
Several recent studies have shown that about half of the massive galaxies at z~2 are in a quiescent phase. Moreover, these galaxies are commonly found to be ultra-compact with half-light radii of ~1 kpc. We have obtained a ~29 hr spectrum of a typical quiescent, ultra-dense galaxy at z=2.1865 with the Gemini Near-Infra...
[ "astro-ph.CO" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
266024415
0905.1814
2009-05-12
Automated Coronal Hole Detection using Local Intensity Thresholding Techniques
We identify coronal holes using a histogram-based intensity thresholding technique and compare their properties to fast solar wind streams at three different points in the heliosphere. The thresholding technique was tested on EUV and X-ray images obtained using instruments onboard STEREO, SOHO and Hinode. The full-disk...
[ "astro-ph.SR" ]
null
[ "target.key_reference" ]
null
null
null
3203870
0905.1995
2009-05-12
VC v. VCG: Inapproximability of Combinatorial Auctions via Generalizations of the VC Dimension
The existence of incentive-compatible computationally-efficient protocols for combinatorial auctions with decent approximation ratios is the paradigmatic problem in computational mechanism design. It is believed that in many cases good approximations for combinatorial auctions may be unattainable due to an inherent cla...
[ "cs.GT", "cs.DM" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "3263670", "num_citations": null } ]
[ { "author_id": "e mossel_1", "name": "Elchanan Mossel", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "c papadimitriou_2", "name": "Christos [\"H.\"] Papadimitriou", "publication_history": null, "h_index": null, ...
null
117010848
0905.1982
2009-05-12
Production of psi(2S) Mesons in ppbar Collisions at 1.96 TeV
We have measured the differential cross section for the inclusive production of psi(2S) mesons decaying to mu^{+} mu^{-1} that were produced in prompt or B-decay processes from ppbar collisions at 1.96 TeV. These measurements have been made using a data set from an integrated luminosity of 1.1 fb^{-1} collected by the ...
[ "hep-ex" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
9659842
0905.1964
2009-05-12
On Models of Multi-user Gaussian Channels with Fading
An analytically tractable model for Gaussian multiuser channels with fading is studied, and the capacity region of this model is found to be a good approximation of the capacity region of the original Gaussian network. This work extends the existing body of work on deterministic models for Gaussian multiuser channels t...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "14898799", "num_citations": null }, { "corpus_id": "1816223", "num_citations": null } ]
[ { "author_id": "r haddad_2", "name": "Rony [\"El\"] Haddad", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "b smith_8", "name": "Brian Smith", "publication_history": null, "h_index": null, "num_papers": null,...
null
12636401
0905.1863
2009-05-12
A Probabilistic Numerical Method for Fully Nonlinear Parabolic PDEs
We consider the probabilistic numerical scheme for fully nonlinear PDEs suggested in \cite{cstv}, and show that it can be introduced naturally as a combination of Monte Carlo and finite differences scheme without appealing to the theory of backward stochastic differential equations. Our first main result provides the c...
[ "math.PR", "math.NA" ]
null
[ "target.author.publication_history.key_reference", "target.key_reference" ]
null
null
null
14254075
0905.1893
2009-05-12
Aligning graphs and finding substructures by a cavity approach
We introduce a new distributed algorithm for aligning graphs or finding substructures within a given graph. It is based on the cavity method and is used to study the maximum-clique and the graph-alignment problems in random graphs. The algorithm allows to analyze large graphs and may find applications in fields such as...
[ "q-bio.QM", "cond-mat.stat-mech", "cs.DS" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14479789
0905.2159
2009-05-13
On the Secrecy Rate of Interference Networks using structured codes
This paper shows that structured transmission schemes are a good choice for secret communication over interference networks with an eavesdropper. Structured transmission is shown to exploit channel asymmetries and thus perform better than randomly generated codebooks for such channels. For a class of interference chann...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "14634978", "num_citations": null } ]
[ { "author_id": "s agrawal_7", "name": "Shweta Agrawal", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "s vishwanath_2", "name": "Sriram Vishwanath", "publication_history": null, "h_index": null, "num_papers":...
null
14946186
0905.2158
2009-05-13
Privacy-Preserving Querying in Sensor Networks
Wireless Sensor Networks (WSNs) provide sensing and monitoring services by means of many tiny autonomous devices equipped with wireless radio transceivers. As WSNs are deployed on a large-scale and/or on long-term basis, not only traditional security but also privacy issues must be taken into account. Furthermore, when...
[ "cs.CR" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "e de cristofaro_1", "name": "Emiliano De Cristofaro", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "x ding_58", "name": "Xuhua Ding", "publication_history": null, "h_index": null, "num_papers...
null
118375149
0905.2015
2009-05-13
A computer controlled pendulum with position readout
We have designed, built and operated a physical pendulum which allows one to demonstrate experimentally the behaviour of the pendulum under any equation of motion for such a device for any initial conditions. All parameters in the equation of motion can be defined by the user. The potential of the apparatus reaches fro...
[ "physics.pop-ph", "physics.class-ph", "physics.ed-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "h hauptfleisch_0", "name": "H. Hauptfleisch", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "t gasenzer_1", "name": "Thomas Gasenzer", "publication_history": null, "h_index": null, "num_papers...
null
14944520
0905.2042
2009-05-13
Estimation for a Partial-Linear Single-Index Model
In this paper, we study the estimation for a partial-linear single-index model. A two-stage estimation procedure is proposed to estimate the link function for the single index and the parameters in the single index, as well as the parameters in the linear component of the model. Asymptotic normality is established for ...
[ "stat.ME", "stat.CO" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
11462412
0905.2183
2009-05-13
Do all millisecond pulsars share a common heritage?
The discovery of millisecond pulsations from neutron stars in low mass X-ray binary (LMXB) systems has substantiated the theoretical prediction that links millisecond radio pulsars (MSRPs) and LMXBs. Since then, the process that produces millisecond radio pulsars from LMXBs, followed by spin-down due to dipole radiatio...
[ "astro-ph.GA", "astro-ph.SR" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "b kiziltan_1", "name": "Bülent Kiziltan", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "s thorsett_1", "name": "Stephen [\"Erik\"] Thorsett", "publication_history": null, "h_index": null, "nu...
null
10773242
0905.2199
2009-05-13
Sampling from the thermal quantum Gibbs state and evaluating partition functions with a quantum computer
We present a quantum algorithm to prepare the thermal Gibbs state of interacting quantum systems. This algorithm sets a universal upper bound D^alpha on the thermalization time of a quantum system, where D is the system's Hilbert space dimension and alpha < 1/2 is proportional to the Helmholtz free energy density of th...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
353618
0905.2195
2009-05-13
Expressiveness and Closure Properties for Quantitative Languages
Weighted automata are nondeterministic automata with numerical weights on transitions. They can define quantitative languages $L$ that assign to each word $w$ a real number $L(w)$. In the case of infinite words, the value of a run is naturally computed as the maximum, limsup, liminf, limit average, or discounted sum of...
[ "cs.LO" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "k chatterjee_3", "name": "Krishnendu Chatterjee", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "l doyen_1", "name": "Laurent Doyen", "publication_history": null, "h_index": null, "num_papers"...
null
88518194
0905.2078
2009-05-13
Sparse recovery in convex hulls via entropy penalization
Let $(X,Y)$ be a random couple in $S\times T$ with unknown distribution $P$ and $(X_1,Y_1),...,(X_n,Y_n)$ be i.i.d. copies of $(X,Y).$ Denote $P_n$ the empirical distribution of $(X_1,Y_1),...,(X_n,Y_n).$ Let $h_1,...,h_N:S\mapsto [-1,1]$ be a dictionary that consists of $N$ functions. For $\lambda \in {\mathbb{R}}^N,$...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
118495770
0905.1965
2009-05-13
The Synoptic All-Sky Infrared (SASIR) Survey
We are proposing to conduct a multicolor, synoptic infrared (IR) imaging survey of the Northern sky with a new, dedicated 6.5-meter telescope at San Pedro M\'artir (SPM) Observatory. This initiative is being developed in partnership with astronomy institutions in Mexico and the University of California. The 4-year, ded...
[ "astro-ph.IM", "astro-ph.CO", "astro-ph.EP", "astro-ph.GA" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "j bloom_1", "name": "Joshua [\"S.\"] Bloom", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "j prochaska_1", "name": "Jason [\"Xavier\"] Prochaska", "publication_history": null, "h_index": null, ...
null
7037007
0905.2404
2009-05-14
A Convergent Overlapping Domain Decomposition Method for Total Variation Minimization
This paper is concerned with the analysis of convergent sequential and parallel overlapping domain decomposition methods for the minimization of functionals formed by a discrepancy term with respect to data and a total variation constraint. To our knowledge, this is the first successful attempt of addressing such strat...
[ "math.NA" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "m fornasier_1", "name": "Massimo Fornasier", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a langer_1", "name": "Andreas Langer", "publication_history": null, "h_index": null, "num_papers": n...
null
151901
0905.2250
2009-05-14
A Discontinuous Galerkin Method for Viscous Compressible Multifluids
We present a generalized discontinuous Galerkin method for a multicomponent compressible barotropic Navier-Stokes system of equations. The system presented has a functional viscosity nu which depends on the pressure p=p(rho,mu_i) of the flow, with the density rho and the local concentration mu_i. High order Runge-Kutta...
[ "physics.comp-ph", "physics.chem-ph", "physics.class-ph", "physics.flu-dyn" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "c michoski_1", "name": "Craig Michoski", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "j evans_3", "name": "J. [\"A.\"] Evans", "publication_history": null, "h_index": null, "num_papers": nul...
null
14948672
0905.2411
2009-05-14
Color Distributions, Number and Mass Densities of Massive Galaxies at 1.5 < z < 3: Comparing Observations with Merger Simulations
We present a comparison between the observed color distribution, number and mass density of massive galaxies at 1.5 < z < 3 and a model by Hopkins et al. that relates the quasar and galaxy population on the basis of gas-rich mergers. In order to test the hypothesis that quiescent red galaxies are formed after a gas-ric...
[ "astro-ph.CO" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
8937880
0905.2419
2009-05-14
The Quantum and Classical Complexity of Translationally Invariant Tiling and Hamiltonian Problems
We study the complexity of a class of problems involving satisfying constraints which remain the same under translations in one or more spatial directions. In this paper, we show hardness of a classical tiling problem on an N x N 2-dimensional grid and a quantum problem involving finding the ground state energy of a 1-...
[ "quant-ph", "cs.CC" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
126357
0905.2392
2009-05-14
On Channel Output Feedback in Deterministic Interference Channels
In this paper, we study the effect of channel output feedback on the sum capacity in a two-user symmetric deterministic interference channel. We find that having a single feedback link from one of the receivers to its own transmitter results in the same sum capacity as having a total of 4 feedback links from both the r...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[ { "corpus_id": "17831965", "num_citations": null } ]
[ { "author_id": "a sahai_2", "name": "Achaleshwar Sahai", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "v aggarwal_5", "name": "Vaneet Aggarwal", "publication_history": null, "h_index": null, "num_papers": nu...
null
524088
0905.2441
2009-05-14
On the utility of graphics cards to perform massively parallel simulation of advanced Monte Carlo methods
We present a case-study on the utility of graphics cards to perform massively parallel simulation of advanced Monte Carlo methods. Graphics cards, containing multiple Graphics Processing Units (GPUs), are self-contained parallel computational devices that can be housed in conventional desktop and laptop computers. For ...
[ "stat.CO" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119225355
0905.2348
2009-05-14
Non-minimal quintessence and phantom with nearly flat potentials
We investigate quintessence and phantom dark energy scenarios, in which the scalar fields evolve in nearly flat potentials and are non-minimally coupled to gravity. We show that all such models converge to a common behavior and we provide the corresponding approximate analytical expressions for $w(\Omega_\phi)$ and $w(...
[ "astro-ph.CO", "gr-qc", "hep-th" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "g gupta_7", "name": "Gaveshna Gupta", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "e saridakis_1", "name": "Emmanuel [\"N.\"] Saridakis", "publication_history": null, "h_index": null, "num_p...
null
12145160
0905.2265
2009-05-14
Product formula for Jacobi polynomials, spherical harmonics and generalized Bessel function of dihedral type
We work out the expression of the generalized Bessel function of type B in the two-rank case. This is done using Dijskma and Koornwinder's product formula for Jacobi polynomials and the obtained expression is given by multiple integrals involving only a normalized modified Bessel function and two symmetric Beta distrib...
[ "math.PR" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "44587", "num_citations": null } ]
[ { "author_id": "n demni_1", "name": "Nizar Demni", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
4428663
0905.2292
2009-05-14
Information Causality as a Physical Principle
Quantum physics exhibits remarkable distinguishing characteristics. For example, it gives only probabilistic predictions (non-determinism) and does not allow copying of unknown state (no-cloning). Quantum correlations may be stronger than any classical ones, nevertheless information cannot be transmitted faster than li...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
52460003
0905.2401
2009-05-14
Tail asymptotics for exponential functionals of Levy processes: the convolution equivalent case
We determine the rate of decrease of the right tail distribution of the exponential functional of a Levy process with a convolution equivalent Levy measure. Our main result establishes that it decreases as the right tail of the image under the exponential function of the Levy measure of the underlying Levy process. The...
[ "math.PR" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
6788870
0905.2592
2009-05-15
A sticky HDP-HMM with application to speaker diarization
We consider the problem of speaker diarization, the problem of segmenting an audio recording of a meeting into temporal segments corresponding to individual speakers. The problem is rendered particularly difficult by the fact that we are not allowed to assume knowledge of the number of people participating in the meeti...
[ "stat.ME", "stat.AP", "stat.ML" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "e fox_2", "name": "Emily [\"B.\"] Fox", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "e sudderth_1", "name": "Erik [\"B.\"] Sudderth", "publication_history": null, "h_index": null, "num_paper...
null
13113666
0905.2452
2009-05-15
Contact graphs of disk packings as a model of spatial planar networks
Spatially constrained planar networks are frequently encountered in real-life systems. In this paper, based on a space-filling disk packing we propose a minimal model for spatial maximal planar networks, which is similar to but different from the model for Apollonian networks [J. S. Andrade, Jr. et al., Phys. Rev. Lett...
[ "cond-mat.stat-mech" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "z zhang_150", "name": "Zhongzhi Zhang", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "j guan_17", "name": "Jihong Guan", "publication_history": null, "h_index": null, "num_papers": null, ...
null
15425693
0905.2559
2009-05-15
Electroweak Phase Transition and LHC Signatures in the Singlet Majoron Model
We reconsider the strength of the electroweak phase transition in the singlet Majoron extension of the Standard Model, with a low (~TeV) scale of the singlet VEV. A strongly first order phase transition, of interest for electroweak baryogenesis, is found in sizeable regions of the parameter space, especially when the c...
[ "hep-ph" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "18769528", "num_citations": null }, { "corpus_id": "2916303", "num_citations": null } ]
[ { "author_id": "j cline_2", "name": "James [\"M.\"] Cline", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "s kraml_1", "name": "Sabine Kraml", "publication_history": null, "h_index": null, "num_papers": null,...
null
118634585
0905.2562
2009-05-15
Entanglement entropy in free quantum field theory
In this review we first introduce the general methods to calculate the entanglement entropy for free fields, within the Euclidean and the real time formalisms. Then we describe the particular examples which have been worked out explicitly in two, three and more dimensions.
[ "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
6126691
0905.2497
2009-05-15
A "joint+marginal" approach to parametric polynomial optimization
Given a compact parameter set $Y\subset R^p$, we consider polynomial optimization problems $(P_y$) on $R^n$ whose description depends on the parameter $y\inY$. We assume that one can compute all moments of some probability measure $\phi$ on $Y$, absolutely continuous with respect to the Lebesgue measure (e.g. $Y$ is a ...
[ "math.OC" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
11553197
0905.2485
2009-05-15
Minimizing Communication in Linear Algebra
In 1981 Hong and Kung proved a lower bound on the amount of communication needed to perform dense, matrix-multiplication using the conventional $O(n^3)$ algorithm, where the input matrices were too large to fit in the small, fast memory. In 2004 Irony, Toledo and Tiskin gave a new proof of this result and extended it t...
[ "cs.CC", "cs.DS", "cs.NA", "math.NA" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
16437568
0905.2532
2009-05-15
Keck HIRES Spectroscopy of Extragalactic HII Regions: C and O Abundances from Recombination Lines
We present very deep spectrophotometry of 14 bright extragalactic HII regions belonging to spiral, irregular, and blue compact galaxies. The data for 13 objects were taken with the HIRES echelle spectrograph on the Keck I telescope. We have measured CII recombination lines in 10 of the objects and OII recombination lin...
[ "astro-ph.CO", "astro-ph.GA" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
31458186
0905.2499
2009-05-15
A Symbolic Algorithm for Computing Recursion Operators of Nonlinear PDEs
A recursion operator is an integro-differential operator which maps a generalized symmetry of a nonlinear PDE to a new symmetry. Therefore, the existence of a recursion operator guarantees that the PDE has infinitely many higher-order symmetries, which is a key feature of complete integrability. Completely integrable n...
[ "nlin.SI" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
2916701
0905.2638
2009-05-15
Secure Degrees of Freedom for Gaussian Channels with Interference: Structured Codes Outperform Gaussian Signaling
In this work, we prove that a positive secure degree of freedom is achievable for a large class of Gaussian channels as long as the channel is not degraded and the channel is fully connected. This class includes the MAC wire-tap channel, the 2-user interference channel with confidential messages, the 2-user interferenc...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
118406327
0905.2517
2009-05-15
The GENIE Neutrino Monte Carlo Generator
GENIE is a new neutrino event generator for the experimental neutrino physics community. The goal of the project is to develop a `canonical' neutrino interaction physics Monte Carlo whose validity extends to all nuclear targets and neutrino flavors from MeV to PeV energy scales. Currently, emphasis is on the few-GeV en...
[ "hep-ph" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[ { "corpus_id": "7276324", "num_citations": null }, { "corpus_id": "7320680", "num_citations": null }, { "corpus_id": "9671036", "num_citations": null } ]
[ { "author_id": "c andreopoulos_1", "name": "Costas Andreopoulos", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a bell_2", "name": "A. [\"L.\"] Bell", "publication_history": null, "h_index": null, "num_paper...
null
834319
0905.2639
2009-05-16
Information-theoretic limits of selecting binary graphical models in high dimensions
The problem of graphical model selection is to correctly estimate the graph structure of a Markov random field given samples from the underlying distribution. We analyze the information-theoretic limitations of the problem of graph selection for binary Markov random fields under high-dimensional scaling, in which the g...
[ "cs.IT", "cs.LG", "math.IT", "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15211259
0905.2689
2009-05-16
Optical spectra obtained from amorphous films of rubrene: Evidence for predominance of twisted isomer
In order to investigate the optical properties of rubrene we study the vibronic progression of the first absorption band (lowest \pi -> \pi^* transition). We analyze the dielectric function of rubrene in solution and thin films using the displaced harmonic oscillator model and derive all relevant parameters of the vibr...
[ "cond-mat.soft" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "m kytka_1", "name": "Milan Kytka", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "l gisslén_1", "name": "L. Gisslén", "publication_history": null, "h_index": null, "num_papers": null, "num...
null
2304649
0905.2659
2009-05-16
Coalitional Games for Distributed Collaborative Spectrum Sensing in Cognitive Radio Networks
Collaborative spectrum sensing among secondary users (SUs) in cognitive networks is shown to yield a significant performance improvement. However, there exists an inherent trade off between the gains in terms of probability of detection of the primary user (PU) and the costs in terms of false alarm probability. In this...
[ "cs.GT", "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "7295816", "num_citations": null } ]
[ { "author_id": "w saad_1", "name": "Walid Saad", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "z han_40", "name": "Zhu Han", "publication_history": null, "h_index": null, "num_papers": null, "num_citatio...
null
118850477
0905.2666
2009-05-16
Quantifying and identifying the overlapping community structure in networks
It has been shown that the communities of complex networks often overlap with each other. However, there is no effective method to quantify the overlapping community structure. In this paper, we propose a metric to address this problem. Instead of assuming that one node can only belong to one community, our metric assu...
[ "physics.soc-ph" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "h shen_38", "name": "Huawei Shen", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "x cheng_3", "name": "Xueqi Cheng", "publication_history": null, "h_index": null, "num_papers": null, "num_...
null
7351028
0905.2676
2009-05-16
On the Benefits of Bandwidth Limiting in Decentralized Vector Multiple Access Channels
We study the network spectral efficiency of decentralized vector multiple access channels (MACs) when the number of accessible dimensions per transmitter is strategically limited. Considering each dimension as a frequency band, we call this limiting process bandwidth limiting (BL). Assuming that each transmitter maximi...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "s perlaza_1", "name": "Samir [\"Medina\"] Perlaza", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "m debbah_1", "name": "Mérouane Debbah", "publication_history": null, "h_index": null, "num_pa...
null
821462
0905.2776
2009-05-17
An Asymptotically Optimal Policy for Finite Support Models in the Multiarmed Bandit Problem
We propose minimum empirical divergence (MED) policy for the multiarmed bandit problem. We prove asymptotic optimality of the proposed policy for the case of finite support models. In our setting, Burnetas and Katehakis has already proposed an asymptotically optimal policy. For choosing an arm our policy uses a criteri...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15465195
0905.2720
2009-05-17
Geometric Langlands From Six Dimensions
Geometric Langlands duality is usually formulated as a statement about Riemann surfaces, but it can be naturally understood as a consequence of electric-magnetic duality of four-dimensional gauge theory. This duality in turn is naturally understood as a consequence of the existence of a certain exotic supersymmetric co...
[ "hep-th", "math.RT" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14164098
0905.2765
2009-05-17
The Galaxy Major Merger Fraction to z ~ 1
Aims: We study the major merger fraction in a SPITZER/IRAC-selected catalogue in the GOODS-S field up to z ~ 1 for luminosity- and mass-limited samples. Methods: We select disc-disc merger remnants on the basis of morphological asymmetries, and address three main sources of systematic errors: (i) we explicitly apply mo...
[ "astro-ph.CO" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
11614641
0905.2724
2009-05-17
Prisoner's dilemma in structured scale-free networks
The conventional wisdom is that scale-free networks are prone to cooperation spreading. In this paper we investigate the cooperative behaviors on the structured scale-free network. On the contrary of the conventional wisdom that scale-free networks are prone to cooperation spreading, the evolution of cooperation is inh...
[ "physics.soc-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "x li_539", "name": "Xing Li", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "y wu_64", "name": "Yonghui Wu", "publication_history": null, "h_index": null, "num_papers": null, "num_citation...
null
12883421
0905.2997
2009-05-18
Average-Case Active Learning with Costs
We analyze the expected cost of a greedy active learning algorithm. Our analysis extends previous work to a more general setting in which different queries have different costs. Moreover, queries may have more than two possible responses and the distribution over hypotheses may be non uniform. Specific applications inc...
[ "cs.LG" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14090915
0905.2914
2009-05-18
Accuracy of Quasicontinuum Approximations Near Instabilities
The formation and motion of lattice defects such as cracks, dislocations, or grain boundaries, occurs when the lattice configuration loses stability, that is, when an eigenvalue of the Hessian of the lattice energy functional becomes negative. When the atomistic energy is approximated by a hybrid energy that couples at...
[ "math.NA", "math-ph", "math.MP" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
118474009
0905.2915
2009-05-18
Concavity of the quantum body for any given dimension
Let us consider the set of all joint probabilities generated by local binary measurements on two separated quantum systems of a given local dimension d. We address the question of whether the shape of this quantum body is convex or not. We construct a point in the space of joint probabilities, which is on the convex hu...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
24835126
0905.2942
2009-05-18
Quantum stochastic walks: A generalization of classical random walks and quantum walks
We introduce the quantum stochastic walk (QSW), which determines the evolution of generalized quantum mechanical walk on a graph that obeys a quantum stochastic equation of motion. Using an axiomatic approach, we specify the rules for all possible quantum, classical and quantum-stochastic transitions from a vertex as d...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
16619104
0905.2842
2009-05-18
Next Challenge in Neutrino Physics: the theta(13) Angle
A new generation of oscillation experiments optimized to measure theta(13) is ready to start. Performances, complementarity and competition of these accelerator and reactor experiments will be shortly illustrated. The capability of measuring theta(13) with other neutrino sources, like solar, atmospheric, supernovae neu...
[ "hep-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
2357756
0905.2935
2009-05-18
Experimental demonstration of associative memory with memristive neural networks
When someone mentions the name of a known person we immediately recall her face and possibly many other traits. This is because we possess the so-called associative memory, that is the ability to correlate different memories to the same fact or event. Associative memory is such a fundamental and encompassing human abil...
[ "q-bio.NC", "cond-mat.mes-hall", "q-bio.MN" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15719154
0905.2819
2009-05-18
A simple forward selection procedure based on false discovery rate control
We propose the use of a new false discovery rate (FDR) controlling procedure as a model selection penalized method, and compare its performance to that of other penalized methods over a wide range of realistic settings: nonorthogonal design matrices, moderate and large pool of explanatory variables, and both sparse and...
[ "stat.AP" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15439753
0905.3195
2009-05-19
Brane Dynamics and 3D Seiberg Duality on the Domain Walls of 4D N=1 SYM
We study a three-dimensional U(k) Yang-Mills Chern-Simons theory with adjoint matter preserving two supersymmetries. According to Acharya and Vafa, this theory describes the low-energy worldvolume dynamics of BPS domain walls in four-dimensional N=1 SYM theory. We demonstrate how to obtain the same theory in a brane co...
[ "hep-th" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "13207271", "num_citations": null }, { "corpus_id": "118928837", "num_citations": null }, { "corpus_id": "18211130", "num_citations": null }, { "corpus_id": "14132619", "num_citations": null }, { "corpus_id": "2761753", "num_citations": null }...
[ { "author_id": "a armoni_1", "name": "Adi Armoni", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a giveon_1", "name": "Amit Giveon", "publication_history": null, "h_index": null, "num_papers": null, "num...
null
119235126
0905.3173
2009-05-19
A Unified Representation of Gas-Phase Element Depletions in the Interstellar Medium
A study of gas-phase element abundances reported in the literature for 17 different elements sampled over 243 sight lines in the local part of our Galaxy reveals that the depletions into solid form (dust grains) are extremely well characterized by trends that employ only three kinds of parameters. One is an index that ...
[ "astro-ph.GA" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
11518075
0905.3109
2009-05-19
Interference Channels with Source Cooperation
The role of cooperation in managing interference - a fundamental feature of the wireless channel - is investigated by studying the two-user Gaussian interference channel where the source nodes can both transmit and receive in full-duplex. The sum-capacity of this channel is obtained within a gap of a constant number of...
[ "cs.IT", "math.IT" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[ { "corpus_id": "17831965", "num_citations": null } ]
[ { "author_id": "v prabhakaran_1", "name": "Vinod [\"M.\"] Prabhakaran", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "p viswanath_1", "name": "Pramod Viswanath", "publication_history": null, "h_index": null, ...
null
117021657
0905.2975
2009-05-19
Quasinormal modes of black holes and black branes
Quasinormal modes are eigenmodes of dissipative systems. Perturbations of classical gravitational backgrounds involving black holes or branes naturally lead to quasinormal modes. The analysis and classification of the quasinormal spectra requires solving non-Hermitian eigenvalue problems for the associated linear diffe...
[ "gr-qc", "astro-ph.HE", "hep-ph", "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
8783267
0905.3108
2009-05-19
A Note on the Complexity of the Satisfiability Problem for Graded Modal Logics
Graded modal logic is the formal language obtained from ordinary (propositional) modal logic by endowing its modal operators with cardinality constraints. Under the familiar possible-worlds semantics, these augmented modal operators receive interpretations such as "It is true at no fewer than 15 accessible worlds that....
[ "cs.LO", "cs.AI", "cs.CC" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "y kazakov_1", "name": "Yevgeny Kazakov", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "i pratt-hartmann_1", "name": "Ian Pratt-Hartmann", "publication_history": null, "h_index": null, "num_pa...
null
17182339
0905.3017
2009-05-19
Homogeneous photometry and star counts in the field of 9 Galactic star clusters
We present homogeneous $V,I$ CCD photometry of nine stellar fields in the two inner quadrants of the Galactic plane. The lines-of-view to most of these fields aim in the direction of the very inner Galaxy, where the Galactic field is very dense, and extinction is high and patchy. Our nine fields are, according to sever...
[ "astro-ph.GA" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14548228
0905.3190
2009-05-19
A dedicated Chandra ACIS observation of the central compact object in the Cassiopeia A supernova remnant
We present results of a recent Chandra X-ray Observatory observation of the central compact object (CCO) in the supernova remnant Cassiopeia A. This observation was obtained in an instrumental configuration that combines a high spatial resolution with a minimum spectral distortion, and it allowed us to search for pulsa...
[ "astro-ph.HE" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119294893
0905.2996
2009-05-19
Ballistic properties of crystalline defects
We introduce a field theoretic formalism enabling the direct study of dislocation and interstitial dynamics. Explicit expressions for the energies of such defects are given. We provide links to earlier numerical, discrete elastic, time dependent Ginzburg Landau, and other approaches sought by numerous authors for the p...
[ "cond-mat.str-el", "cond-mat.mtrl-sci" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "v cvetkovic_1", "name": "Vladimir Cvetkovic", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "z nussinov_1", "name": "Zohar Nussinov", "publication_history": null, "h_index": null, "num_papers"...
null
2359047
0905.2979
2009-05-19
Extreme deconvolution: Inferring complete distribution functions from noisy, heterogeneous and incomplete observations
We generalize the well-known mixtures of Gaussians approach to density estimation and the accompanying Expectation--Maximization technique for finding the maximum likelihood parameters of the mixture to the case where each data point carries an individual $d$-dimensional uncertainty covariance and has unique missing da...
[ "stat.ME", "astro-ph.GA", "physics.data-an", "stat.AP", "stat.CO" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15562076
0905.3429
2009-05-20
Auctions with Online Supply
We study the problem of selling identical goods to n unit-demand bidders in a setting in which the total supply of goods is unknown to the mechanism. Items arrive dynamically, and the seller must make the allocation and payment decisions online with the goal of maximizing social welfare. We consider two models of unkno...
[ "cs.GT", "cs.DS" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
118453971
0905.3224
2009-05-20
New Magellanic Cloud R Coronae Borealis and DY Per type stars from the EROS-2 database: the connection between RCBs, DYPers and ordinary carbon stars
R Coronae Borealis stars (RCB) are a rare type of evolved carbon-rich supergiant stars that are increasingly thought to result from the merger of two white dwarfs, called the Double degenerate scenario. This scenario is also studied as a source, at higher mass, of type Ia Supernovae (SnIa) explosions. Therefore a bette...
[ "astro-ph.SR" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14521865
0905.3183
2009-05-20
Black holes in asymptotically Lifshitz spacetimes with arbitrary critical exponent
Recently, a class of gravitational backgrounds in 3+1 dimensions have been proposed as holographic duals to a Lifshitz theory describing critical phenomena in 2+1 dimensions with critical exponent $z\geq 1$. We numerically explore black holes in these backgrounds for a range of values of $z$. We find drastically differ...
[ "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
12417038
0905.3297
2009-05-20
Replicators in Fine-grained Environment: Adaptation and Polymorphism
Selection in a time-periodic environment is modeled via the two-player replicator dynamics. For sufficiently fast environmental changes, this is reduced to a multi-player replicator dynamics in a constant environment. The two-player terms correspond to the time-averaged payoffs, while the three and four-player terms ar...
[ "q-bio.PE", "physics.bio-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "a allahverdyan_1", "name": "Armen [\"E.\"] Allahverdyan", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "c hu_50", "name": "Chin-Kun Hu", "publication_history": null, "h_index": null, "num_pap...
null
7113455
0905.3369
2009-05-20
Learning Nonlinear Dynamic Models
We present a novel approach for learning nonlinear dynamic models, which leads to a new set of tools capable of solving problems that are otherwise difficult. We provide theory showing this new approach is consistent for models with long range structure, and apply the approach to motion capture and high-dimensional vid...
[ "cs.AI", "cs.LG" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "j langford_1", "name": "John Langford", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "r salakhutdinov_2", "name": "Ruslan Salakhutdinov", "publication_history": null, "h_index": null, "num_pa...
null
15749417
0905.3377
2009-05-20
Monotonicity of entropy for real multimodal maps
In \cite{Mil}, Milnor posed the {\em Monotonicity Conjecture} that the set of parameters within a family of real multimodal polynomial interval maps, for which the topological entropy is constant, is connected. This conjecture was proved for quadratic by Milnor & Thurston \cite{MT} and for cubic maps by Milnor & Tresse...
[ "math.DS" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
12654525
0905.3174
2009-05-20
Angular Synchronization by Eigenvectors and Semidefinite Programming
The angular synchronization problem is to obtain an accurate estimation (up to a constant additive phase) for a set of unknown angles $\theta_1,...,\theta_n$ from $m$ noisy measurements of their offsets $\theta_i-\theta_j \mod 2\pi$. Of particular interest is angle recovery in the presence of many outlier measurements ...
[ "math.SP" ]
null
[ "target.author.publication_history.key_reference", "target.key_reference" ]
null
null
null
15336908
0905.3275
2009-05-20
Inverse problems for the anisotropic Maxwell equations
We prove that the electromagnetic material parameters are uniquely determined by boundary measurements for the time-harmonic Maxwell equations in certain anisotropic settings. We give a uniqueness result in the inverse problem for Maxwell equations on an admissible Riemannian manifold, and a uniqueness result for Maxwe...
[ "math.AP", "math-ph", "math.MP" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119113617
0905.3385
2009-05-20
Topological insulator on the kagome lattice
Itinerant electrons in a two-dimensional Kagome lattice form a Dirac semi-metal, similar to graphene. When lattice and spin symmetries are broken by various periodic perturbations this semi-metal is shown to spawn interesting non-magnetic insulating phases. These include a two-dimensional topological insulator with a n...
[ "cond-mat.mes-hall", "cond-mat.str-el" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119195896
0905.3225
2009-05-20
Simulation of two dimensional quantum systems on an infinite lattice revisited: corner transfer matrix for tensor contraction
An extension of the projected entangled-pair states (PEPS) algorithm to infinite systems, known as the iPEPS algorithm, was recently proposed to compute the ground state of quantum systems on an infinite two-dimensional lattice. Here we investigate a modification of the iPEPS algorithm, where the environment is compute...
[ "cond-mat.str-el" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "r orús_1", "name": "Román Orús", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "g vidal_1", "name": "Guifré Vidal", "publication_history": null, "h_index": null, "num_papers": null, "num_c...
null
6041703
0905.3328
2009-05-20
How adsorption influences DNA denaturation
The thermally induced denaturation of DNA in the presence of attractive solid surface is studied. The two strands of DNA are modeled via two coupled flexible chains without volume interactions. If the two strands are adsorbed on the surface, the denaturation phase-transition disappears. Instead, there is a smooth cross...
[ "cond-mat.soft", "cond-mat.mes-hall", "q-bio.BM" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "a allahverdyan_1", "name": "Armen [\"E.\"] Allahverdyan", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "z gevorkian_1", "name": "Zh. [\"S.\"] Gevorkian", "publication_history": null, "h_index": n...
null
15143371
0905.3428
2009-05-20
Finding Anomalous Periodic Time Series: An Application to Catalogs of Periodic Variable Stars
Catalogs of periodic variable stars contain large numbers of periodic light-curves (photometric time series data from the astrophysics domain). Separating anomalous objects from well-known classes is an important step towards the discovery of new classes of astronomical objects. Most anomaly detection methods for time ...
[ "cs.LG", "astro-ph.IM", "physics.data-an" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[ { "corpus_id": "15893189", "num_citations": null } ]
[ { "author_id": "u rebbapragada_1", "name": "Umaa [\"D.\"] Rebbapragada", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "p protopapas_1", "name": "Pavlos Protopapas", "publication_history": null, "h_index": null, ...
null
12117948
0905.3239
2009-05-20
On the Picard number of divisors in Fano manifolds
Let X be a complex Fano manifold of arbitrary dimension, and D a prime divisor in X. We consider the image H of N_1(D) in N_1(X) under the natural push-forward of 1-cycles. We show that the codimension c of H in N_1(X) is at most 8. Moreover if c>2, then either X=SxY where S is a Del Pezzo surface, or c=3 and X has a f...
[ "math.AG" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
7579128
0905.3573
2009-05-21
A unified approach to model selection and sparse recovery using regularized least squares
Model selection and sparse recovery are two important problems for which many regularization methods have been proposed. We study the properties of regularization methods in both problems under the unified framework of regularized least squares with concave penalties. For model selection, we establish conditions under ...
[ "math.ST", "stat.TH" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[ { "corpus_id": "14052118", "num_citations": null }, { "corpus_id": "9407348", "num_citations": null } ]
[ { "author_id": "j lv_11", "name": "Jinchi Lv", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "y fan_53", "name": "Yingying Fan", "publication_history": null, "h_index": null, "num_papers": null, "num_cita...
null
15537642
0905.3575
2009-05-21
First-Passage Kinetic Monte Carlo method
We present a new efficient method for Monte Carlo simulations of diffusion-reaction processes. First introduced by us in [Phys. Rev. Lett., 97:230602, 2006], the new algorithm skips the traditional small diffusion hops and propagates the diffusing particles over long distances through a sequence of super-hops, one part...
[ "cond-mat.mtrl-sci" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null