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November 2013 arXiv papers — page 31

Showing 3,0013,100 of 7,801 papers

  1. George I. Japaridze, Henrik Johannesson, Mariana Malard

    We show that the combination of a Dresselhaus interaction and a spatially periodic Rashba interaction leads to the formation of a helical liquid in a quantum wire when the electron-electron interaction is weakly screened. The effect is sustained by a helicity-dependent effective band gap which depends on the size of the Dresselhaus and Rashba spin-orbit coup

  2. Ippei Fujisawa, Kenta Nakagawa, Ryuichi Nakayama

    New holographic prescription for the model of 3d higher-spin gravity coupled to real matter fields $B_{μν}$ and $C$, which was introduced in ArXiv:1304.7941[hep-th], is formulated. By using a local symmetry, two of the components of $B_{μν}$ are eliminated, and gauge-fixing conditions are imposed such that the non-vanishing component, $B_{ϕρ}$, satisfies a c

  3. Tobias Rindlisbacher, Philippe de Forcrand

    The transition between the two phases of 4D Euclidean Dynamical Triangulation [1] was long believed to be of second order until in 1996 first order behavior was found for sufficiently large systems [3,4]. However, one may wonder if this finding was affected by the numerical methods used: to control volume fluctuations, in both studies [3,4] an artificial har

  4. Julien Roux, Eyal Privman, Sebastien Moretti, Josephine T. Daub

    The evolution of ants is marked by remarkable adaptations that allowed the development of very complex social systems. To identify how ant-specific adaptations are associated with patterns of molecular evolution, we searched for signs of positive selection on amino-acid changes in proteins. We identified 24 functional categories of genes which were enriched

  5. Tomohiro Abe, Junji Hisano, Teppei Kitahara, Kohsaku Tobioka

    We calculate all gauge invariant Barr-Zee type contributions to fermionic electric dipole moments (EDMs) in the two-Higgs doublet models (2HDM) with softly broken Z2 symmetry. We start by studying the tensor structure of h to VV' part in the Barr-Zee diagrams, and we calculate the effective couplings in a gauge invariant way by using the pinch technique.

  6. Michal Horovitz, Tuvi Etzion

    Snake-in-the-box code is a Gray code which is capable of detecting a single error. Gray codes are important in the context of the rank modulation scheme which was suggested recently for representing information in flash memories. For a Gray code in this scheme the codewords are permutations, two consecutive codewords are obtained by using the "push-to-th

  7. Nikolaos Roidos, Elmar Schrohe

    Extending earlier results on the existence of bounded imaginary powers for cone differential operators on weighted $L^p$-spaces $\mathcal{H}^{0,γ}_p(\mathbb{B})$ over a manifold with conical singularities, we show how the same assumptions also yield the existence of bounded imaginary powers on higher order Mellin-Sobolev spaces $\mathcal{H}^{s,γ}_p(\mathbb{B

  8. J. H. Martínez, J. M. Pastor, P. Ariza, M. Zanin

    Increased variability in performance has been associated with the emergence of several neurological and psychiatric pathologies. However, whether and how consistency of neuronal activity may also be indicative of an underlying pathology is still poorly understood. Here we propose a novel method for evaluating consistency from non-invasive brain recordings. W

  9. G. Hurier, N. Aghanim, M. Douspis, E. Pointecouteau

    In the standard hot cosmological model, the black-body temperature of the Cosmic Microwave Background (CMB), $T_{\rm CMB}$, increases linearly with redshift. Across the line of sight CMB photons interact with the hot ($\sim10^{7-8}$ K) and diffuse gas of electrons from galaxy clusters. This interaction leads to the well known thermal Sunyaev-Zel'dovich e

  10. Xing Xiao, Yan-Ling Li

    Entangled states in high dimensional systems are of great interest due to the extended possibilities they provide in quantum information processing. Recently, Sun et al. [Phys. Rev. A 82, 052323 (2010)] and Kim et al. [Nat. Phys. 8, 117 (2012)] pointed out that weak measurement and quantum weak measurement reversal can actively combat decoherence. We general

  11. Peter Kovacs, Gyorgy Wolf

    An extended linear sigma model with mesons (q\bar{q} states) and baryons (qqq states) is presented. The model contains a low energy multiplet for every hadronic particle type, namely a scalar, a pseudoscalar, a vector, and an axialvector nonet, an baryon octet and a baryon decuplet. The model parameters are determined through a multiparametric minimalization

  12. Keiji Yada, Alexander A. Golubov, Yukio Tanaka, Satoshi Kashiwaya

    We study the surface Andreev bound state (ABS) of superconducting Sr$_2$RuO$_4$, which is a candidate material for the realization of the chiral $p$-wave superconducting state. In order to clarify the role of chiral edge modes as ABSs, the surface density of states and the tunneling conductance is calculated in the normal metal/Sr$_2$RuO$_4$ junction within

  13. B. M. Mognetti, A. Šarić, S. Angioletti-Uberti, A. Cacciuto

    Recent studies aimed at investigating artificial analogs of bacterial colonies have shown that low-density suspensions of self-propelled particles confined in two dimensions can assemble into finite aggregates that merge and split, but have a typical size that remains constant (living clusters). In this Letter we address the problem of the formation of livin

  14. Rafael Chaves, Antonio Acín, Leandro Aolita, Daniel Cavalcanti

    The Clauser-Horne-Shimony-Holt inequality was originally proposed as a Bell inequality to detect nonlocality in bipartite systems. However, it can also be used to certify the nonlocality of multipartite quantum states. We apply this to study the nonlocality of multipartite Greenberger-Horne-Zeilinger, W and graph states under local decoherence processes. We

  15. Susumu Ariki, Kazuto Iijima, Euiyong Park

    We give Erdmann-Nakano type theorem for the finite quiver Hecke algebras $R^{Λ_0}(β)$ of affine type $A^{(1)}_{\ell}$. Note that each finite quiver Hecke algebra lies in one parameter family, and the original Erdmann-Nakano theorem studied the finite quiver Hecke algebra at a special parameter value. We study the general case in our paper. Our result shows i

  16. Indranil Biswas, Frank Neumann

    We construct connections and characteristic forms for principal bundles over groupoids and stacks in the differentiable, holomorphic and algebraic category using Atiyah sequences associated to transversal tangential distributions.

  17. Yashar Ahmadian, Francesco Fumarola, Kenneth D. Miller

    We provide a general formula for the eigenvalue density of large random $N\times N$ matrices of the form $A = M + LJR$, where $M$, $L$ and $R$ are arbitrary deterministic matrices and $J$ is a random matrix of zero-mean independent and identically distributed elements. For $A$ nonnormal, the eigenvalues do not suffice to specify the dynamics induced by $A$,

  18. Tai-Wei Chen, Chung-I Ho, Jyh-Haur Teh

    We define Aeppli and Bott-Chern cohomology for bi-generalized complex manifolds and show that they are finite dimensional for compact bi-generalized Hermitian manifolds. For totally bounded double complexes $(A, d', d'')$, we show that the validity of $d'd''$-lemma is equivalent to having the same dimension of several cohomology group

  19. Sheng Li, Andrew R Liddle

    We present a systematic method for evaluation of perturbation observables in non-canonical single-field inflation models within the slow-roll approximation, which allied with field redefinitions enables predictions to be established for a wide range of models. We use this to investigate various non-canonical inflation models, including Tachyon inflation and

  20. Titus K Mathew, P. Praseetha

    We explore the validity of the generalized second law (GSL) of thermodynamics in flat FRW universe with apparent horizon and event horizon as the boundary. We found that in a universe with holographic Ricci dark energy and dark matter, interacting with each other, the GSL is satisfied at the apparent horizon and partially satisfied at the event horizon under

  21. Syamsundar De, Vladyslav Potapchuk, Fabien Bretenaker

    The properties of a dual-frequency vertical external cavity surface emitting laser (VECSEL), in which two linear orthogonal polarization modes are oscillating simultaneously, are theoretically investigated. We derive a model based on the ideas introduced by San Miguel et al. [San Miguel, Feng, and Moloney, Phys. Rev. A \textbf{52}, 1728 (1995)], taking into

  22. Wei Chen, Ming Gong, R. Shen, D. Y. Xing

    We propose an Andreev interferometer, based on a branched Y-junction, to detect the finite momentum pairing in Fulde-Ferrell (FF) superconductors. In this interferometer, the oscillation of subgap conductance is a unique function of phase difference between the two channels of the Y-junction, which is determined by the phase modulation of the order parameter

  23. Vladimir Gerdt, Arsen Khvedelidze, Yuri Palii

    The unitary $ \mathrm{U}(d)$-equivalence relation between elements of the space $\mathfrak{P}_+\,$ of mixed states of $d$-dimensional quantum system defines the orbit space $ \mathfrak{P}_+/ \mathrm{U}(d)\,$ and provides its description in terms the ring $\mathbb{R}[\mathfrak{P}_+]^{\mathrm{U}(d)}\,$ of $\mathrm{U}(d)$-invariant polynomials. We prove that th

  24. Alex W. K. Mok, Cheuk-Ping Wong, Wai-Yu Sit

    We calculate the combined angular distribution functions of the polarized photons ($γ_1$ and $γ_2$) and electron ($e^-$) produced in the cascade process $\bar{p}p\rightarrow$ $^3D_3\rightarrow$ $^3P_2+γ_1\rightarrow$ $(ψ+γ_2)+γ_1\rightarrow(e^++e^-)+γ_1+γ_2$, when the colliding $\bar{p}$ and $p$ are unpolarized. Our results are independent of any dynamical m

  25. Ian Marshall

    Hamiltonian reduction is used to project a trivially integrable system on the Heisenberg double of $SU(n,n)$, to obtain a system of Ruijsenaars type on a suitable quotient space. This system possesses $BC_n$ symmetry and is shown to be equivalent to the standard three-parameter $BC_n$ hyperbolic Sutherland model in the cotangent bundle limit.

  26. Dilian Yang

    Let $\Fth$ be a single vertex \textsf{k}-graph, and $π_ω(Ø_θ)"$ be the von Neumann algebra induced from the GNS representation of a distinguished state $ω$ of its $\textsf{k}$-graph C*-algebra $Ø_θ$. In this paper, we prove the factoriality of $π_ω(Ø_θ)"$ and further determine its type, when either $\Fth$ has the little pull-back property, or the int

  27. T. Sekihara, S. Kumano

    The radiative decay of $Λ(1405)$ is investigated from the viewpoint of compositeness, which corresponds to the amount of two-body states composing resonances as well as bound states. For a $\bar{K}N (I=0)$ bound state without couplings to other channels, we establish a relation between the radiative decay width and the compositeness. Especially the radiative

  28. Varun Narasimhachar, Gilad Gour

    Practical implementations of quantum information-theoretic applications rely on phase coherences between systems. These coherences are disturbed by misalignment between phase references. Quantum states carrying phase-asymmetry act as resources to counteract this misalignment. In this paper, we construct protocols for interconverting these resources by first

  29. Robert Lang, Wolfram Weise

    A large-$N_{\rm c}$ expansion is combined with the Kubo formalism to study the shear viscosity $η$ of strongly interacting matter in the two-flavor NJL model. We discuss analytical and numerical approaches to $η$ and investigate systematically its strong dependence on the spectral width and the momentum-space cutoff. Thermal effects on the constituent quark

  30. Tomomi Sato, Norikazu Yamada

    In the study of critical phenomena of QCD, a linear sigma model (LSM) is often analyzed as it shares many properties with QCD. Motivated by recent arguments on effective restoration of the U_A(1) symmetry around the critical temperature, the renormalization group flow of U(2)$\otimes$U(2) LSM with a small violation of the U_A(1) symmetry is examined in the t

  31. I. Y. Park

    We reduce the BTZ spacetime to two kinds of hypersurfaces of foliation: one having a fixed radial coordinate and the other a fixed angular coordinate. The radial reduction leads to a Liouville type theory, and confirms, from the first principle, the expectation laid out in the literature. In the other endeavor, the angular reduction of the 3D gravity is carr

  32. Seiya Nishiyama, Joao da Providencia, Hiromasa Ohnishi

    We propose a rigorous thermal resonating mean-field theory (Res-MFT). A state is approximated by superposition of multiple MF wavefunctions (WFs) composed of non-orthogonal Hartree-Bogoliubov (HB) WFs. We adopt a Res-HB subspace spanned by Res-HB ground and excited states. A partition function (PF) in a SO(2N) coherent state representation |g> (N:Number of s

  33. Víctor Cuevas-Vicenttín, Saumen Dey, Sven Köhler, Sean Riddle

    Scientific workflows are becoming increasingly popular for compute-intensive and data-intensive scientific applications. The vision and promise of scientific workflows includes rapid, easy workflow design, reuse, scalable execution, and other advantages, e.g., to facilitate "reproducible science" through provenance (e.g., data lineage) support. Howev

  34. Jayanth Chennamangalam, Andrew P. V. Siemion, D. R. Lorimer, Dan Werthimer

    It has been speculated that technological civilizations evolve along an energy consumption scale first formulated by Kardashev, ranging from human-like civilizations that consume energy at a rate of $\sim 10^{19}$ erg s$^{-1}$ to hypothetical highly advanced civilizations that can consume $\sim 10^{44}$ erg s$^{-1}$. Since the transmission power of a beacon

  35. Anna Marie Bohmann, Kristen Mazur, Angélica M. Osorno, Viktoriya Ozornova

    We define a model structure on the category GCat of small categories with an action by a finite group G by lifting the Thomason model structure on Cat. We show there is a Quillen equivalence between GCat with this model structure and GTop with the standard model structure.

  36. Randall Dougherty, Chris Freiling, Kenneth Zeger

    Determining the achievable rate region for networks using routing, linear coding, or non-linear coding is thought to be a difficult task in general, and few are known. We describe the achievable rate regions for four interesting networks (completely for three and partially for the fourth). In addition to the known matrix-computation method for proving outer

  37. James Maynard

    We introduce a refinement of the GPY sieve method for studying prime $k$-tuples and small gaps between primes. This refinement avoids previous limitations of the method, and allows us to show that for each $k$, the prime $k$-tuples conjecture holds for a positive proportion of admissible $k$-tuples. In particular, $\liminf_{n}(p_{n+m}-p_n)<\infty$ for any in

  38. Jose A. Magpantay, Cilicia Uzziel M. Perez

    We present solutions to the classical Liouville equation for ergodic and completely integrable systems - systems that are known to attain equilibrium. Ergodic systems are known to thermal equilibrate with a Maxwell-Boltzmann distribution and we show a simple derivation of this distribution that also leads to a derivation of the distribution at any time t. Fo

  39. S. M. Mukane, Y. S. Ghodake, P. S. Khandagle

    The idea of combining multiple image modalities to provide a single, enhanced image is well established different fusion methods have been proposed in literature. This paper is based on image fusion using laplacian pyramid and wavelet transform method. Images of same size are used for experimentation. Images used for the experimentation are standard images a

  40. V. Karthikeyan, M. Divya, C. K. Chithra, K. Manju Priya

    Character identification plays a vital role in the contemporary world of Image processing. It can solve many composite problems and makes humans work easier. An instance is Handwritten Character detection. Handwritten recognition is not a novel expertise, but it has not gained community notice until Now. The eventual aim of designing Handwritten Character re

  41. V. Karthikeyan, Manjupriya, C. K. Chithra, M. Divya

    In the beginning stage, face verification is done using easy method of geometric algorithm models, but the verification route has now developed into a scientific progress of complicated geometric representation and matching process. In modern time the skill have enhanced face detection system into the vigorous focal point. Researchers currently undergoing st

  42. Chatschik Bisdikian, Federico Cerutti, Yuqing Tang, Nir Oren

    In this paper we describe a decision process framework allowing an agent to decide what information it should reveal to its neighbours within a communication graph in order to maximise its utility. We assume that these neighbours can pass information onto others within the graph. The inferences made by agents receiving the messages can have a positive or neg

  43. Federico Cerutti, Alice Toniolo, Nir Oren, Timothy J. Norman

    Computational trust mechanisms aim to produce trust ratings from both direct and indirect information about agents&#39; behaviour. Subjective Logic (SL) has been widely adopted as the core of such systems via its fusion and discount operators. In recent research we revisited the semantics of these operators to explore an alternative, geometric interpretation

  44. V. Karthikeyan

    Character identification plays a vital role in the contemporary world of Image processing. It can solve many composite problems and makes humans work easier. An instance is Handwritten Character detection. Handwritten recognition is not a novel expertise, but it has not gained community notice until Now. The eventual aim of designing Handwritten Character re

  45. S. Bellucci, E. R. Bezerra de Mello, A. de Padua, A. A. Saharian

    We investigate the fermionic condensate (FC) and the vacuum expectation value (VEV) of the energy-momentum tensor for a charged massive fermionic field in the geometry of a cosmic string compactified along its axis. In addition, we assume the presence of two types of magnetic fluxes: a flux running along the cosmic string and another enclosed by the compact

  46. Pawel Kempisty, Pawel Strak, Konrad Sakowski, Stanislaw Krukowski

    Vapor growth of semiconductors is analyzed using recently obtained dependence of the adsorption energy on the electron charge transfer between the surface adsorbed species and the bulk [Krukowski et al. J. Appl. Phys. 114 (2013) 063507, Kempisty et al. ArXiv 1307.5778 (2013)]. Ab initio calculations were performed to study the physical properties of GaN(0001

  47. Yoshihiro Yamazaki, Mitsunobu Kikuchi, Akihiko Toda, Jun-ichi Wakita

    There exists the threshold-sensitive dynamical transition between the uniform and the periodic growth modes in the domain growth of ascorbic acid crystals from its aqueous supersaturated solution film. The crystal growth induces the solution flow. Humidity controls the fluidity of the solution. The solution flow varies the film thickness. The threshold exist

  48. Y. Miyamoto, N. Nakai, N. Kuno

    We have investigated the dynamics of the molecular gas and the evolution of GMAs in the spiral galaxy M51 with the NRO 45-m telescope. The velocity components of the molecular gas perpendicular and parallel to the spiral arms are derived at each spiral phase from the distribution of the line-of-sight velocity of the CO gas. In addition, the shear motion in t

  49. M. Fischer, J. Handt, G. Seifert, R. Schmidt

    By means of non-adiabatic quantum molecular dynamics it is shown, that the amount of energy deposited into $\text{C}_{60}$ by a short laser field strongly depends on the molecular orientation with respect to the laser polarization direction. In consequence, subsequent electron-vibration coupling leads to different nuclear relaxation mechanisms with mainly th

  50. Claudio De Persis, Pietro Tesi

    We investigate resilient control strategies for linear systems under Denial-of-Service (DoS) attacks. By DoS attacks we mean interruptions of communication on measurement (sensor-to-controller) and/or control (controller-to-actuator) channels carried out by an intelligent adversary. We characterize the duration of these interruptions under which stability of

  51. Dorota Bors, Andrzej Skowron, Stanisław Walczak

    In the paper some sufficient condition for the nonlinear integral operator of the Volterra type to be a diffeomorphism defined on the space of absolutely continuous functions are formulated. The proof relies on consideration of the linearized equation together with Palais-Smale condition, thus a combination of topological and variational methods is used. The

  52. Nikolaos A. Batakis

    The antisoliton-soliton {\cal G}={\cal S_-}\!\vee{\cal S_+} neutral state is a proper geon in a family of stable squashed-S^3\times\IR pp-wave electrovacua along a primordial Q/r^2 field. With {\cal S_-} propagating backwards in time, the dominant EM field is that of an effective electric-dipole moment {\sf p}. If disjointed, the {\cal S_\pm} carry \pm Q cha

  53. Amelia Carolina Sparavigna

    Pearltrees is a social service, using which people can organise Web contents, photos and notes. These contents are the &#34;pearls&#34; on some trees. Besides the social opportunities, the trees can be used as a tool to organise references and for content curation. However, they can be helpful for teaching purposes too.

  54. Joseph Heled, Alexei J. Drummond

    Here we introduce a general class of multiple calibration birth-death tree priors for use in Bayesian phylogenetic inference. All tree priors in this class separate ancestral node heights into a set of &#34;calibrated nodes&#34; and &#34;uncalibrated nodes&#34; such that the marginal distribution of the calibrated nodes is user-specified whereas the density

  55. Robert Harron, Andrew Snowden

    Mazur&#39;s theorem states that there are exactly 15 possibilities for the torsion subgroup of an elliptic curve over the rational numbers. We determine how often each of these groups actually occurs. Precisely, if $G$ is one of these 15 groups, we show that the number of elliptic curves up to height $X$ whose torsion subgroup is isomorphic to $G$ is on the

  56. Gary Friedman, Stephen McCarthy, Dmitrii Rachinskii

    Hysteresis and bet-hedging (random choice of phenotypes) are two different observations typically linked with multiplicity of phenotypes in biological systems. Hysteresis can be viewed as form of the system&#39;s persistent memory of past environmental conditions, while bet-hedging is a diversification strategy not necessarily associated with any memory. It

  57. Kouji Kashiwa, Hiroaki Kouno, Takahiro Makiyama, Tatsuhiro Misumi

    We investigated the phase diagram of $SU(3)$ gauge theory in four dimension with one compact dimension by using the perturbative one-loop effective potential. Effects of the adjoint and fundamental fermions are investigated and then the rich phase structure in the quark-mass and compact-size scale is realized. Our results are qualitatively consistent with th

  58. A. N. Cooke, R. Horsley, Y. Nakamura, D. Pleiter

    We present results from the QCDSF/UKQCD collaboration for hyperon electromagnetic form factors and axial charges obtained from simulations using Nf=2+1 flavours of O(a)-improved Wilson fermions. We also consider matrix elements relevant for hyperon semileptonic decays. We find flavour-breaking effects in hyperon magnetic moments which are consistent with exp

  59. Matthew Hague

    Ground Tree Rewrite Systems with State are known to have an undecidable control state reachability problem. Taking inspiration from the recent introduction of scope-bounded multi-stack pushdown systems, we define Senescent Ground Tree Rewrite Systems. These are a restriction of ground tree rewrite systems with state such that nodes of the tree may no longer

  60. Z. Amirabi

    We revisit the spherically symmetric third order Lovelock black hole solution in 7-dimensions. We show that the general solution for the metric function does not admit the Gauss-Bonnet (GB) limit. This is not expected due to the linear superposition of the second (GB) and third order Lovelock Lagrangians in the general action. It is found that the two branch

  61. E. Klevak, J. J. Kas, J. J. Rehr

    Strongly correlated materials such as transition metal oxides (TMOs) often exhibit large satellites in their x-ray photoemission (XPS) and x-ray absorption spectra (XAS). These satellites arise from localized charge-transfer (CT) excitations that accompany the sudden creation of a core hole. Here we use a two-step approach to treat such excitations in a loca

  62. T. Eelbo, M. Waśniowska, M. Gyamfi, S. Forti

    We investigate the adsorption sites of $3d$ transition metal (TM) adatoms by means of low-temperature scanning tunneling microscopy and spectroscopy. Co and Ni adatoms were adsorbed on two types of graphene on SiC(0001), i.e. pristine epitaxial monolayer graphene (MLG) and quasi-free-standing monolayer graphene (QFMLG). In the case of QFMLG, two stable adsor

  63. Nicola Gigli, Andrea Mondino, Giuseppe Savaré

    Aim of this paper is to discuss convergence of pointed metric measure spaces in absence of any compactness condition. We propose various definitions, show that all of them are equivalent and that for doubling spaces these are also equivalent to the well known measured-Gromov-Hausdorff convergence. Then we show that the curvature conditions $CD(K,\infty)$ and

  64. Gabriele Fici

    A balanced word is one in which any two factors of the same length contain the same number of each letter of the alphabet up to one. Finite binary balanced words are called Sturmian words. A Sturmian word is bispecial if it can be extended to the left and to the right with both letters remaining a Sturmian word. There is a deep relation between bispecial Stu

  65. Tabetha Boyajian, Gerard van Belle, Kaspar von Braun

    The number of stellar angular diameter measurements has greatly increased over the past few years due to innovations and developments in the field of long baseline optical interferometry (LBOI). We use a collection of high-precision angular diameter measurements for nearby, main-sequence stars to develop empirical relations that allow the prediction of stell

  66. Henning Fernau, Juan A. Rodriguez-Velazquez

    In this paper, we show that several graph parameters are known in different areas under completely different names. More specifically, our observations connect signed domination, monopolies, $α$-domination, $α$-independence, positive influence domination, and a parameter associated to fast information propagation in networks to parameters related to various

  67. Abdelmalek Abdesselam

    We present a quick introduction to quantum field theory and Wilson&#39;s theory of the renormalization group from the point of view of mathematical analysis. The presentation is geared primarily towards a probability theory, harmonic analysis and dynamical systems theory audience.

  68. Dean C. Hines, Gorden Videen, Evgenij Zubko, Karri Muinonen

    We present polarization images of Comet ISON (C/2012 S1) taken with the Hubble Space Telescope (HST) on UTC 2013 May 8 (rh = 3.81 AU, Delta = 4.34 AU), when the phase angle was alpha = 12.16 degrees. This phase angle is approximately centered in the negative polarization branch for cometary dust. The region beyond 1000 km from the nucleus shows a negative po

  69. Hussain Anwar, Benjamin J. Brown, Earl T. Campbell, Dan E. Browne

    Qudit toric codes are a natural higher-dimensional generalization of the well-studied qubit toric code. However standard methods for error correction of the qubit toric code are not applicable to them. Novel decoders are needed. In this paper we introduce two renormalization group decoders for qudit codes and analyze their error correction thresholds and eff

  70. Renato Pakter, Bruno Marcos, Yan Levin

    Systems with long-range interactions, such as self-gravitating clusters and magnetically confined plasmas, do not relax to the usual Boltzmann-Gibbs thermodynamic equilibrium, but become trapped in quasi-stationary states (QSS) the life time of which diverges with the number of particles. The QSS are characterized by the lack of ergodicity which can result i

  71. H. G. Fargnoli, C. Gnendiger, S. Passehr, D. Stöckinger

    Recent progress on the (g-2)_μprediction is presented. In the SM, the Higgs-boson mass dependent contributions have been evaluated exactly up to the two-loop level and consistently combined with leading three-loop effects. Thus, the currently most accurate value including a detailed error analysis for the SM electroweak contributions has been obtained. The S

  72. T. Appelquist, R. C. Brower, M. I. Buchoff, M. Cheng

    Using lattice simulations, we study the infrared behavior of a particularly interesting SU(2) gauge theory, with six massless Dirac fermions in the fundamental representation. We compute the running gauge coupling derived non-perturbatively from the Schrodinger functional of the theory, finding no evidence for an infrared fixed point up through gauge couplin

  73. Seth A. Jacobson, Daniel J. Scheeres, Jay McMahon

    We propose and analyze a new mechanism for the formation of the wide asynchronous binary population. These binary asteroids have wide semi-major axes relative to most near-Earth and Main Belt asteroid systems. Confirmed members have rapidly rotating primaries and satellites that are not tidally locked. Previously suggested formation mechanisms from impact ej

  74. Miguel S. Costa, James Drummond, Vasco Goncalves, Joao Penedones

    We study two kinematical limits, the Regge limit and the Lorentzian OPE limit, of the four-point function of the stress-tensor multiplet in Super Yang-Mills at weak coupling. We explain how both kinematical limits are controlled by the leading twist operators. We use the known expression of the four-point function up to three loops, to extract the pomeron re

  75. Nikolay Bobev, Krzysztof Pilch, Nicholas P. Warner

    We use maximal gauged supergravity in four dimensions to construct the gravity dual of a class of supersymmetric conformal interfaces in the theory on the world-volume of multiple M2-branes. We study three classes of examples in which the $(1+1)$-dimensional defects preserve $(4,4)$, $(0,2)$ or $(0,1)$ supersymmetry. Many of the solutions have the maximally

  76. B. Jalali, I. Pelupessy, A. Eckart, S. Portegies Zwart

    We aim at modelling small groups of young stars such as IRS 13N, 0.1 pc away from Sgr A*, which is suggested to contain a few embedded massive young stellar objects. We perform hydrodynamical simulations to follow the evolution of molecular clumps orbiting about a $4\times10^6 ~ M_{\odot}$ black hole, to constrain the formation and the physical conditions of

  77. S. F. Hoenig, P. Gandhi, D. Asmus, R. F. Mushotzky

    X-ray surveys have revealed a new class of active galactic nuclei (AGN) with a very low observed fraction of scattered soft X-rays, f_scat < 0.5%. Based on X-ray modeling these &#34;X-ray new-type&#34;, or low observed X-ray scattering (hereafter:&#34;low-scattering&#34;) sources have been interpreted as deeply-buried AGN with a high covering factor of gas.

  78. Rolf-Peter Kudritzki, Miguel A. Urbaneja, J. Zachary Gazak, Lucas Macri

    We present the first direct determination of a stellar metallicity in the spiral galaxy NGC4258 (D=7.6 Mpc) based on the quantitative analysis of a low-resolution (~5 AE) Keck LRIS spectrum of a blue supergiant star located in its disk. A determination of stellar metallicity in this galaxy is important for the absolute calibration of the Cepheid Period-Lumin

  79. Enrique Moreno Méndez

    Using binary evolution with Case-C mass transfer, the spins of several black holes (BHs) in X$-$ray binaries (XBs) have been predicted and confirmed (three cases) by observations. The rotational energy of these BHs is sufficient to power up long gamma$-$ray bursts and hypernovae (GRBs/HNe) and still leave a Kerr BH behind. However, strong magnetic fields and

  80. Lu Jiang, Woo Seok Choi, Hyoungjeen Jeen, Shuai Dong

    The ferroelectric (FE) control of electronic transport is one of the emerging technologies in oxide heterostructures. Many previous studies in FE tunnel junctions (FTJs) exploited solely the differences in the electrostatic potential across the FTJs that are induced by changes in the FE polarization direction. Here, we show that in practice the junction curr

  81. Joël Rouyer, Costin Vîlcu

    We study the existence of simple closed geodesics on most (in the sense of Baire category) Alexandrov surfaces with curvature bounded below, compact and without boundary. We show that it depends on both the curvature bound and the topology of the surfaces.

  82. K. Krajewska, M. Twardy, J. Z. Kamiński

    Nonlinear Thomson and Compton processes, in which energetic electrons collide with an intense optical pulse, are investigated in the framework of classical and quantum electrodynamics. Spectral modulations of the emitted radiation, appearing as either oscillatory or pulsating structures, are observed and explained. It is shown that both processes generate a

  83. Isabelle Pâris, Patrick Petitjean, Éric Aubourg, Nicholas P. Ross

    We present the Data Release 10 Quasar (DR10Q) catalog from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey III. The catalog includes all BOSS objects that were targeted as quasar candidates during the first 2.5 years of the survey and that are confirmed as quasars via visual inspection of the spectra. The catalog also inclu

  84. J. -E. Wegrowe, H. -J. Drouhin, D. Lacour

    The angular dependence of the thermal transport in insulating or conducting ferromagnets is derived on the basis of the Onsager reciprocity relations applied to a magnetic system. It is shown that the angular dependence of the temperature gradient takes the same form as that of the anisotropic magnetoresistance, including anomalous and planar Hall contributi

  85. D. Cseh, P. Kaaret, S. Corbel, F. Grise

    We report on the discovery of an apparent triple radio structure hidden inside the radio bubble of the ultraluminous X-ray source Holmberg II X-1. The morphology is consistent with a collimated jet structure, which is observed to emit optically thin synchrotron radiation. The central component has a steep radio spectrum and is brighter than the outer compone

  86. A. Yu. Aleksandrov, Oliver Mason

    We present a set of results concerning the existence of Lyapunov-Krasovskii functionals for classes of nonlinear switched systems with time-delay. In particular, we first present a result for positive systems that relaxes conditions recently described in \cite{SunWang} for the existence of L-K functionals. We also provide related conditions for positive coup

  87. Matthew W. Kunz, James M. Stone, Xue-Ning Bai

    We describe Pegasus, a new hybrid-kinetic particle-in-cell code tailored for the study of astrophysical plasma dynamics. The code incorporates an energy-conserving particle integrator into a stable, second-order--accurate, three-stage predictor-predictor-corrector integration algorithm. The constrained transport method is used to enforce the divergence-free

  88. Michal Horovitz

    Local rank modulation scheme was suggested recently for representing information in flash memories in order to overcome drawbacks of rank modulation. For $s\leq t\leq n$ with $s|n$, $(s,t,n)$-LRM scheme is a local rank modulation scheme where the $n$ cells are locally viewed through a sliding window of size $t$ resulting in a sequence of small permutations w

  89. D. A. Hejhal

    This is the first installment in a series of papers devoted to examining certain aspects of the asymptotic value distribution and distribution of zeros manifested by members of a broad class of linear combinations of L-functions in the vicinity of the critical line Re(s) = 1/2. The results that we ultimately plan to discuss will entail a certain amount of pr

  90. Roberto W. Nóbrega, Chen Feng, Danilo Silva, Bartolomeu F. Uchôa-Filho

    Motivated by physical-layer network coding, this paper considers communication in multiplicative matrix channels over finite chain rings. Such channels are defined by the law $Y =A X$, where $X$ and $Y$ are the input and output matrices, respectively, and $A$ is called the transfer matrix. It is assumed a coherent scenario in which the instances of the trans

  91. Luis Barba, Alexis Beingessner, Prosenjit Bose, Michiel H. M. Smid

    Let $ϕ$ be a function that maps any non-empty subset $A$ of $\mathbb{R}^2$ to a non-empty subset $ϕ(A)$ of $\mathbb{R}^2$. A $ϕ$-cover of a set $T=\{T_1, T_2, \dots, T_m\}$ of pairwise non-crossing trees in the plane is a set of pairwise disjoint connected regions such that each tree $T_i$ is contained in some region of the cover, and each region of the cove

  92. Jialong Cheng, Meera Sitharam, Ileana Streinu

    When all non-edge distances of a graph realized in $\mathbb{R}^{d}$ as a {\em bar-and-joint framework} are generically {\em implied} by the bar (edge) lengths, the graph is said to be {\em rigid} in $\mathbb{R}^{d}$. For $d=3$, characterizing rigid graphs, determining implied non-edges and {\em dependent} edge sets remains an elusive, long-standing open prob

  93. Ekaterina V. Mastropas, David G. Richards

    We present a calculation of the decay constant of the pion, and its lowest-lying three excitations, at three values of the pion mass between around 400 and 700 MeV, using anisotropic clover lattices. We use the variational method to determine an optimal interpolating operator for each of the states. We find that the decay constant of the first excitation, an

  94. Valmir C. Barbosa, Raul Donangelo, Sergio R. Souza

    A quasispecies is the stationary state of a set of interrelated genotypes that evolve according to the usual principles of selection and mutation. Quasispecies studies have invariably concentrated on the possibility of errors during genotype replication and their role in promoting either the survival or the demise of the quasispecies. In a previous work [V.

  95. Vasily Mironov, Alexander Romanov, Alexander Simonov, Maria Vedunova

    We take into account the influence of extracellular signalling on neurite elongation in a model of neurite growth mediated by building proteins (e.g. tubulin). Tubulin production dynamics was supplied by a function describing the influence of the extracellular signalling that can promote or depress the elongation. We found that such extracellular feedback ca

  96. Servet Martinez

    Let $I$ be a finite alphabet and $\aS\subset I$ be a nonempty strict subset. The sequences in $I^\ZZ$ are organized into connected regions which always start with a symbol in $\aS$. The regions are labelled by types $C(s)$, thus a region starting at $s&#39;\in C(s)$ has the same type as one starting at $s$. Let $(\aP_s: s\in \aS)$ be a family of distribution

  97. Maxwell T. Hansen, Stephen R. Sharpe

    This is a combined write-up for two talks which were given consecutively and which described different aspects of the same topic. We present a generalization of Lüscher&#39;s relation between the finite-volume spectrum and S-matrix to three particles. Specifically, we consider a scalar field theory, which has a $\mathbb{Z}_2$ symmetry that prevents even/odd

  98. Li Ge, Ani Nersisyan, Baris Oztop, Hakan E. Tureci

    Exciton-polaritons generated by light-induced potentials can spontaneously condense into macroscopic quantum states that display nontrivial spatial and temporal density modulation. While these patterns and their dynamics can be reproduced through the solution of the generalized Gross-Pitaevskii equation, a predictive theory of their thresholds, oscillation f

  99. M. C. López-de-los-Mozos, Juan A. Mesa, Anita Schöbel

    In this paper we consider a set of origin-destination pairs in a mixed model in which a network embedded in the plane represents an alternative high-speed transportation system, and study a trip covering problem which consists on locating two points in the network which maximize the number of covered pairs, that is, the number of pairs which use the network

  100. Christophe Carré, Noemie Debroux, Matthieu Deneufchatel, Jean-Philippe Dubernard

    We investigate the enumeration of two families of polycubes, namely pyramids and espaliers, in connection with the multi-indexed Dirichlet convolution