Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.



[Snark] rr4
Posted:
May 1, 2016 5:05 PM



\\ arXiv:1511.02728 (*crosslisting*) Date: Mon, 9 Nov 2015 15:59:22 GMT (748kb,D)
Title: Multiconfigurational quantum propagation with trajectoryguided generalized coherent states Authors: Adriano Grigolo, Thiago F. Viscondi and Marcus A. M. de Aguiar Categories: quantph physics.chemph physics.classph physics.compph Comments: 29 pages, 3 figures \\ A generalized version of the coupled coherent states method for coherent states of arbitrary Lie groups is developed. In contrast to the original formulation, which is restricted to frozenGaussian basis sets, the extended method is suitable for propagating quantum states of systems featuring diversified physical properties, such as spin degrees of freedom or particle indistinguishability. The approach is illustrated with systems of interacting bosons trapped in double and triplewell potentials, most adequately described in terms of SU(2) and SU(3) bosonic coherent states, respectively. \\ ( http://arxiv.org/abs/1511.02728 , 748kb)  \\ arXiv:1511.02770 (*crosslisting*) Date: Thu, 5 Nov 2015 13:24:20 GMT (38kb)
Title: On supraconvergence phenomenon for second order centered finite differences on nonuniform grids Authors: Gayaz Khakimzyanov, Denys Dutykh (LAMA) Categories: math.NA cs.NA math.CA physics.classph physics.compph Comments: 17 pages, 2 figures, 2 tables, 27 references. Other author's papers can be downloaded at http://www.denysdutykh.com/ \\ In the present note we consider an example of a boundary value problem for a simple second order ordinary differential equation, which may exhibit a boundary layer phenomenon. We show that usual central finite differences, which are second order accurate on a uniform grid, can be substantially upgraded to the fourth order by a suitable choice of the underlying nonuniform grid. This example is quite pedagogical and may give some ideas for more complex problems. \\ ( http://arxiv.org/abs/1511.02770 , 38kb)  \\ arXiv:1511.02771 (*crosslisting*) Date: Thu, 5 Nov 2015 19:21:00 GMT (1886kb)
Title: Numerical solution of conservation laws on moving grids Authors: Gayaz Khakimzyanov, Denys Dutykh (LAMA), Dimitrios Mitsotakis, Nina Shokina Categories: math.NA cs.NA physics.classph physics.compph Comments: 33 pages, 7 figures, 5 tables, 43 references. Other author's papers can be downloaded at http://www.denysdutykh.com/ \\ In the present article we describe a few simple and efficient finite volume type schemes on moving grids in one spatial dimension. The underlying finite volume scheme is conservative and it is accurate up to the second order in space. The main novelty consists in the motion of the grid. This new dynamic aspect can be used to resolve better the areas with high solution gradients or any other special features. No interpolation procedure is employed, thus an unnecessary solution smearing is avoided. Thus, our method enjoys excellent conservation properties. The resulting grid is completely redistributed according the choice of the socalled monitor function. Several more or less universal choices of the monitor function are provided. Finally, the performance of the proposed algorithm is illustrated on several examples stemming from the simple linear advection to the simulation of complex shallow water waves. \\ ( http://arxiv.org/abs/1511.02771 , 1886kb)  \\ arXiv:1510.07195 (*crosslisting*) Date: Sun, 25 Oct 2015 01:11:19 GMT (47kb,D)
Title: The Necessity of Quantizing Gravity Authors: Jeremy Adelman Categories: grqc physics.histph Comments: 13 pages, two figures \\ The Eppley Hannah thought experiment is often cited as justification for attempts by theorists to develop a complete, consistent theory of quantum gravity. A modification of the earlier "Heisenberg microscope" argument for the necessity of quantized light, the EppleyHannah thought experiment purports to show that purely classical gravitational waves would either not conserve energy or else allow for violations of the uncertainty principle. However, several subsequent papers have cast doubt as to the validity of the EppleyHannah argument. In this paper, we attempt to resurrect the EppleyHannah thought experiment by modifying the original argument in such a manner as to render it immune to the present criticisms levied against it. \\ ( http://arxiv.org/abs/1510.07195 , 47kb)  \\ arXiv:1511.02252 (*crosslisting*) Date: Fri, 6 Nov 2015 22:10:14 GMT (1714kb)
Title: The weirdest martensite: Smectic liquid crystal microstructure and WeylPoincar\'e invariance Authors: Danilo B. Liarte, Matthew Bierbaum, Ricardo A. Mosna, Randall D. Kamien and James P. Sethna Categories: condmat.soft condmat.mtrlsci Comments: 5 pages, 4 figures \\ Smectic liquid crystals are remarkable, beautiful examples of materials microstructure, with ordered patterns of geometrically perfect ellipses and hyperbolas. The solution of the complex problem of filling threedimensional space with domains of focal conics under constraining boundary conditions yields a set of strict rules, which are similar to the compatibility conditions in a martensitic crystal. Here we present the rules giving compatible conditions for the concentric circle domains found at twodimensional smectic interfaces with planar boundary conditions. Using configurations generated by numerical simulations, we develop a clustering algorithm to decompose the planar boundaries into domains. The interfaces between different domains agree well with the smectic compatibility conditions. We also discuss generalizations of our approach to describe the full threedimensional smectic domains, where the variant symmetry group is the WeylPoincar\'e group of Lorentz boosts, translations, rotations, and dilatations. \\ ( http://arxiv.org/abs/1511.02252 , 1714kb)  \\ arXiv:1511.02361 (*crosslisting*) Date: Sat, 7 Nov 2015 14:49:42 GMT (1046kb)
Title: A van der Waals pn heterojunction with organic/inorganic semiconductors Authors: Daowei He, Yiming Pan, Haiyan Nan, Shuai Gu, Ziyi Yang, Bing Wu, Xiaoguang Luo, Bingchen Xu, Yuhan Zhang, Yun Li, Zhenhua Ni, Baigeng Wang, Jia Zhu, Yang Chai, Yi Shi, and Xinran Wang Categories: condmat.meshall condmat.mtrlsci Comments: 16 pages, 4 figures Journalref: Applied Physics Letters 107, 183103 (2015) \\ van der Waals (vdW) heterojunctions formed by twodimensional (2D) materials have attracted tremendous attention due to their excellent electrical/optical properties and device applications. However, current 2D heterojunctions are largely limited to atomic crystals, and hybrid organic/inorganic structures are rarely explored. Here, we fabricate hybrid 2D heterostructures with ptype dioctylbenzothienobenzothiophene (C8BTBT) and ntype MoS2. We find that fewlayer C8BTBT molecular crystals can be grown on monolayer MoS2 by vdW epitaxy, with pristine interface and controllable thickness down to monolayer. The operation of the C8BTBT/MoS2 vertical heterojunction devices is highly tunable by bias and gate voltages between three different regimes: interfacial recombination, tunneling and blocking. The pn junction shows diodelike behavior with rectifying ratio up to 105 at the room temperature. Our devices also exhibit photovoltaic responses with power conversion efficiency of 0.31% and photoresponsivity of 22mA/W. With wide material combinations, such hybrid 2D structures will offer possibilities for optoelectronic devices that are not possible from individual constituents. \\ ( http://arxiv.org/abs/1511.02361 , 1046kb)  \\ arXiv:1511.02400 (*crosslisting*) Date: Sat, 7 Nov 2015 20:47:08 GMT (1234kb)
Title: Anomalous magnetoelastic and charge doping effects in thalliumdoped BaFe2As2 Authors: A.S. Sefat, L. Li, H.B. Cao, M.A. McGuire, B. Sales, R. Custelcean, D.S. Parker Categories: condmat.suprcon condmat.mtrlsci condmat.strel Comments: 10 pages; 4 figures \\ Within the BaFe2As2 crystal lattice, we partially substitute thallium for barium and report the effects of interlayer coupling in Ba1xTlxFe2As2 crystals. We demonstrate the unusual effects of magnetoelastic coupling and charge doping in this ironarsenide material, whereby Neel temperature rises with small x, and then falls with additional x. Specifically, we find that Neel and structural transitions in BaFe2As2 (TN =Ts= 133 K) increase for x=0.05 (TN = 138 K, Ts = 140 K) from magnetization, heat capacity, resistivity, and neutron diffraction measurements. Evidence from single crystal Xray diffraction and first principles calculations attributes the stronger magnetism in x=0.05 to magnetoelastic coupling related to the shorter intraplanar FeFe bond distance. With further thallium substitution, the transition temperatures decrease for x = 0.09 (TN = Ts = 131 K), and this is due to charge doping. We illustrate that small changes related to 3d transitionmetal state can have profound effects on magnetism. \\ ( http://arxiv.org/abs/1511.02400 , 1234kb)  \\ arXiv:1511.02464 (*crosslisting*) Date: Sun, 8 Nov 2015 09:57:40 GMT (763kb)
Title: An Industrial THz Killer Application? Authors: Dook van Mechelen Categories: physics.optics condmat.mtrlsci physics.socph Comments: supplementary information included Journalref: Optics & Photonics News 26 (11), 1618 (2015) \\ Terahertz technology is mature enough for largevolume sensing applications. However, Dook van Mechelen says there are a few hurdles preventing its industrial debut. THz spectroscopy has a number of advantages that point to abundant industrial applications, in areas such quality control, security and biomedical imaging. Yet despite those advantages, the search for a THz "killer application"a novel, innovative use with a business case strong enough to bring the technology into the industrial mainstreamhas remained fruitless, and even the hope of finding such an application has begun to falter. Why has a killer app for THz radiation been so elusive? And how can the road to industrial application of this versatile technology be cleared? \\ ( http://arxiv.org/abs/1511.02464 , 763kb)  \\ arXiv:1511.02622 (*crosslisting*) Date: Mon, 9 Nov 2015 10:23:10 GMT (1106kb)
Title: Hydrogensubstituted superconductors SmFeAsO1xHx misidentified as oxygendeficient SmFeAsO1x Authors: Yoshinori Muraba, Soshi Iimura, Satoru Matsuishi, and Hideo Hosono Categories: condmat.suprcon condmat.mtrlsci \\ We investigated the preferred electron dopants at the oxygen sites of 1111type SmFeAsO by changing the atmospheres around the precursor with the composition of Sm:Fe:As:O = 1:1:1:1x in highpressure synthesis. Under H2O and H2 atmospheres, hydrogens derived from H2O or H2 molecules were introduced into the oxygen sites as a hydride ion, and SmFeAsO1xHx was obtained. However, when the H2O and H2 sources were removed from the synthetic process, nearly stoichiometric SmFeAsO was obtained and the maximum amount of oxygen vacancies introduced remained x = 0.05(4). Density functional theory calculations indicated that substitution of hydrogen in the form of H is more stable than the formation of an oxygen vacancy at the oxygen site of SmFeAsO. These results strongly imply that oxygendeficient SmFeAsO1x reported previously is SmFeAsO1xHx with hydride ion incorporated unintentionally during highpressure synthesis. \\ ( http://arxiv.org/abs/1511.02622 , 1106kb)  \\ arXiv:1511.02645 (*crosslisting*) Date: Mon, 9 Nov 2015 11:46:21 GMT (3512kb,D)
Title: Observation of anisotropic interlayer Raman modes in fewlayer ReS2 Authors: Philipp Nagler, Gerd Plechinger, Christian Sch\"uller, Tobias Korn Categories: condmat.meshall condmat.mtrlsci \\ ReS$_2$ has recently emerged as a new member in the rapidly growing family of twodimensional materials. Unlike MoS$_2$ or WSe$_2$, the optical and electrical properties of ReS$_2$ are not isotropic due to the reduced symmetry of the crystal. Here, we present layerdependent Raman measurements of ReS$_2$ samples ranging from monolayers to ten layers in the ultralow frequency regime. We observe layer breathing and shear modes which allow for easy assignment of the number of layers. Polarizationdependent measurements give further insight into the crystal structure and reveal an energetic shift of the shear mode which stems from the inplane anisotropy of the shear modulus in this material. \\ ( http://arxiv.org/abs/1511.02645 , 3512kb)  \\ arXiv:1511.02730 (*crosslisting*) Date: Mon, 9 Nov 2015 16:01:28 GMT (1900kb,D)
Title: Multiple nodeless superconducting gaps in noncentrosymmetric superconductor PbTaSe2 with topological bulk nodal lines Authors: M. X. Wang, Y. Xu, L. P. He, J. Zhang, X. C. Hong, P. L. Cai, Z. B. Wang, J. K. Dong, S. Y. Li Categories: condmat.suprcon condmat.mtrlsci condmat.strel Comments: 5 pages, 4 figures \\ Lowtemperature thermal conductivity measurements were performed on single crystal of PbTaSe$_2$, a noncentrosymmetric superconductor with topological bulk nodal lines in the electronic band structure. It is found that the residual linear term $\kappa_0/T$ is negligible in zero magnetic field. Furthermore, the field dependence of $\kappa_0/T$ exhibits a clear "$S$"shape curve. These results suggest that PbTaSe$_2$ has multiple nodeless superconducting gaps. Therefore, the spintriplet state with gap nodes does not play an important role in this noncentrosymmetric superconductor with strong spinorbital coupling. The fully gapped superconducting state also meets the requirement of a topological superconductor, if PbTaSe$_2$ is indeed the case. \\ ( http://arxiv.org/abs/1511.02730 , 1900kb)  \\ arXiv:1511.02749 (*crosslisting*) Date: Mon, 9 Nov 2015 16:33:01 GMT (704kb)
Title: Investigation of the magnetic structure and crystal field states of pyrochlore antiferromagnet Nd2Zr2O7 Authors: J. Xu, V. K. Anand, A. K. Bera, M. Frontzek, D. L. Abernathy, N. Casati, K. Siemensmeyer, and B. Lake Categories: condmat.strel condmat.mtrlsci Comments: 12 pages, 15 figures, 2 tables \\ We present synchrotron xray diffraction, neutron powder diffraction and timeofflight inelastic neutron scattering measurements on the rare earth pyrochlore oxide Nd2Zr2O7 to study the ordered state magnetic structure and cystal field states. The structural characterization by highresolution synchrotron xray diffraction confirms that the pyrochlore structure has no detectable O vacancies or Nd/Zr site mixing. The neutron diffraction reveals long range allin/allout antiferromagnetic order below T_N ~ 0.4 K with propagation vector k = (0 0 0) and an ordered moment of 1.26(2) \mu_B/Nd at 0.1 K. The ordered moment is much smaller than the estimated moment of 2.65 \mu_B/Nd for the local <111> Ising ground state of Nd3+ (J=9/2) suggesting that the ordering is partially suppressed by quantum fluctuations. The strong Ising anisotropy is further confirmed by the inelastic neutron scattering data which reveals a wellisolated dipolaroctupolar type Kramers doublet ground state. The crystal field level scheme and ground state wavefunction have been determined. \\ ( http://arxiv.org/abs/1511.02749 , 704kb)  \\ arXiv:1511.02783 (*crosslisting*) Date: Mon, 9 Nov 2015 17:48:25 GMT (154kb,D)
Title: Origin of forbidden reflections in multiferroic Ba$_2$CoGe$_2$O$_7$ by neutron diffraction: Symmetry lowering or Renninger effect? Authors: Andrew Sazonov, Martin Meven, Georg Roth, Robert Georgii, Istv\'an K\'ezsm\'arki, Vilmos Kocsis and Vladimir Hutanu Categories: condmat.strel condmat.mtrlsci Comments: 5 pages, 3 figures, 3 tables, submitted for publication \\ For a symmetry consistent theoretical description of the multiferroic phase of Ba$_2$CoGe$_2$O$_7$ a precise knowledge of its crystal structure is a prerequisite. In our previous synchrotron Xray diffraction experiment on multiferroic Ba$_2$CoGe$_2$O$_7$ at room temperature we found forbidden reflections that favour the tetragonaltoorthorhombic symmetry lowering of the titled compound. Here, we report the results of roomtemperature singlecrystal diffraction studies with both hot and cold neutrons to differentiate between the real symmetry lowering and multiple diffraction (the Renninger effect). A comparison of the experimental multiple diffraction patterns with simulated ones rules out the symmetry lowering. Thus, the structural model based on the tetragonal space group $P\bar{4}2_1m$ was selected to describe the Ba$_2$CoGe$_2$O$_7$ symmetry at room temperature. The precise structural parameters from neutron diffraction at 300K are presented and compared with the previous Xray diffraction results. \\ ( http://arxiv.org/abs/1511.02783 , 154kb)  \\ arXiv:1511.02704 (*crosslisting*) Date: Mon, 9 Nov 2015 14:49:39 GMT (11kb)
Title: Quantum Computing with Parafermions Authors: Adrian Hutter and Daniel Loss Categories: quantph condmat.meshall condmat.other Comments: 8 pages, 1 figure \\ $\mathbb{Z}_d$ Parafermions are exotic nonAbelian quasiparticles generalizing Majorana fermions, which correspond to the case $d=2$. In contrast to Majorana fermions, braiding of parafermions with $d>2$ allows to perform an entangling gate. This has spurred interest in parafermions and a variety of condensed matter systems have been proposed as potential hosts for them. In this work, we study the computational power of braiding parafermions more systematically. We make no assumptions on the underlying physical model but derive all our results from the algebraical relations that define parafermions. We find a familiy of $2d$ representations of the braid group that are compatible with these relations. The braiding operators derived this way reproduce those derived previously from physical grounds as special cases. We show that if a $d$level qudit is encoded in the fusion space of four parafermions, braiding of these four parafermions allows to generate the entire singlequdit Clifford group (up to phases), for any $d$. If $d$ is odd, then we show that in fact the entire manyqudit Clifford group can be generated. \\ ( http://arxiv.org/abs/1511.02704 , 11kb)  \\ arXiv:1511.02429 (*crosslisting*) Date: Sun, 8 Nov 2015 02:49:22 GMT (4211kb)
Title: A Microfoundation of Social Capital in Evolving Social Networks Authors: Ahmed M. Alaa, Kartik Ahuja, and Mihaela van der Schaar Categories: cs.SI physics.socph Comments: Centrality, homophily, network formation, popularity, preferential attachment, social capital, social networks \\ A social network confers benefits and advantages on individuals (and on groups), the literature refers to these advantages as social capital. This paper presents a microfounded mathematical model of the evolution of a social network and of the social capital of individuals within the network. The evolution of the network is influenced by the extent to which individuals are homophilic, structurally opportunistic, socially gregarious and by the distribution of types in the society. In the analysis, we identify different kinds of social capital: bonding capital, popularity capital, and bridging capital. Bonding capital is created by forming a circle of connections, homophily increases bonding capital because it makes this circle of connections more homogeneous. Popularity capital leads to preferential attachment: individuals who become popular tend to become more popular because others are more likely to link to them. Homophily creates asymmetries in the levels of popularity attained by different social groups, more gregarious types of agents are more likely to become popular. However, in homophilic societies, individuals who belong to less gregarious, less opportunistic, or major types are likely to be more central in the network and thus acquire a bridging capital. \\ ( http://arxiv.org/abs/1511.02429 , 4211kb) 
\\ arXiv:1511.02562 (*crosslisting*) Date: Mon, 9 Nov 2015 04:18:05 GMT (1843kb)
Title: Modeling the Interplay Between Individual Behavior and Network Distributions Authors: Yang Yang, Jie Tang, Yuxiao Dong, Qiaozhu Mei, Reid A. Johnson, Nitesh V. Chawla Categories: cs.SI physics.socph \\ It is wellknown that many networks follow a powerlaw degree distribution; however, the factors that influence the formation of their distributions are still unclear. How can one model the connection between individual actions and network distributions? How can one explain the formation of group phenomena and their evolutionary patterns? In this paper, we propose a unified framework, M3D, to model human dynamics in social networks from three perspectives: macro, meso, and micro. At the microlevel, we seek to capture the way in which an individual user decides whether to perform an action. At the mesolevel, we study how group behavior develops and evolves over time, based on individual actions. At the macrolevel, we try to understand how network distributions such as powerlaw (or heavytailed phenomena) can be explained by group behavior. We provide theoretical analysis for the proposed framework, and discuss the connection of our framework with existing work. The framework offers a new, flexible way to explain the interplay between individual user actions and network distributions, and can benefit many applications. To model heavytailed distributions from partially observed individual actions and to predict the formation of group behaviors, we apply M3D to three different genres of networks: Tencent Weibo, Citation, and Flickr. We also use informationburst prediction as a particular application to quantitatively evaluate the predictive power of the proposed framework. Our results on the Weibo indicate that M3D's prediction performance exceeds that of several alternative methods by up to 30\%. \\ ( http://arxiv.org/abs/1511.02562 , 1843kb)  \\ arXiv:1511.02291 (*crosslisting*) Date: Sat, 7 Nov 2015 03:18:35 GMT (616kb)
Title: Revealing a Possible Implication by Imposing LeeYang Theorem on the Partition Function of the Universe Authors: William Huanshan Chuang Categories: grqc condmat.statmech Comments: 6 pages, 2 figures. Hi ArXiv admin, I corrected a few typos. arXiv admin note: text overlap with arXiv:1007.3086 by other authors \\ The goals of this note are twofold: First, to revisit a mechanism proposed by Ho\v{r}ava and Minic\cite{Horava:2000fk} which generates a zero cosmological constant to the Universe based on Boltzmann probability distribution and the Holographic principle, a comparison between the zero cosmological constant and recent observation results is given. Secondly, in order to investigate the possibility of phasetransition phenomena of the Universe, a further study on an exponential class of the partition function of the Universe, which is given by Shaw and Barrow \cite{Shaw:2011ij,Barrow:2011bs} was provided by investigating the distribution of LeeYang zeros are given. The contribution of this paper is that after applying the fundamental theorem of algebra to one action chosen from the exponential class that derived from the Shaw and Barrow's works, the LeeYang theorem can be applied to the selected action, meaning that critical phenomena might involve the growth of largescale structure of the Universe, and the phase transition phenomena of the Universe might exist during the spacetime expands. \\ ( http://arxiv.org/abs/1511.02291 , 616kb)  \\ arXiv:1511.02332 (*crosslisting*) Date: Sat, 7 Nov 2015 10:19:48 GMT (22kb,D)
Title: Almost sure convergence of vertex degree densities in the vertexsplitting model Authors: Sigurdur \"Orn Stef\'ansson, Erik Th\"ornblad Categories: math.PR condmat.statmech mathph math.MP Comments: 1 figure MSCclass: 05C80, 05C05, 60J80 \\ We study the limiting degree distribution of the vertex splitting model introduced in \cite{DDJS:2009}. This is a model of randomly growing ordered trees, where in each time step the tree is separated into two components by splitting a vertex into two, and then inserting an edge between the two new vertices. Under some assumptions on the parameters, related to the growth of the maximal degree of the tree, we prove that the vertex degree densities converge almost surely to constants which satisfy a system of equations. Using this we are also able to strengthen and prove some previously nonrigorous results mentioned in the literature. \\ ( http://arxiv.org/abs/1511.02332 , 22kb)  \\ arXiv:1511.02382 (*crosslisting*) Date: Sat, 7 Nov 2015 17:45:42 GMT (178kb,D)
Title: On the M\"obius transformation in the entanglement entropy of fermionic chains Authors: F. Ares, J. G. Esteve, F. Falceto, A. R. de Queiroz Categories: mathph condmat.statmech hepth math.MP quantph Comments: 25 pages, 3 figures \\ There is an intimate relation between entanglement entropy and Riemann surfaces. This fact is explicitly noticed for the case of quadratic fermionic Hamiltonians with finite range couplings. After recollecting this fact, we make a comprehensive analysis of the action of the M\"obius transformations on the Riemann surface. We are then able to uncover the origin of some symmetries and dualities of the entanglement entropy already noticed recently in the literature. These results give further support for the use of entanglement entropy to analyse phase transition. \\ ( http://arxiv.org/abs/1511.02382 , 178kb)  \\ arXiv:1511.02437 (*crosslisting*) Date: Sun, 8 Nov 2015 03:47:58 GMT (578kb,D)
Title: Complex saddle points and the sign problem in complex Langevin simulation Authors: Tomoya Hayata, Yoshimasa Hidaka, Yuya Tanizaki Categories: heplat condmat.statmech hepth Comments: 6 pages, 5 figures Reportno: RIKENQHP202, RIKENSTAMP17 \\ We show that complex Langevin simulation converges to a wrong result, by relating it to the Lefschetzthimble path integral, when the pathintegral weight has different phases among dominant complex saddle points. Equilibrium solution of the complex Langevin equation forms local distributions around complex saddle points. Its ensemble average approximately becomes a direct sum of the average in each local distribution, where relative phases among them are dropped. We propose that by taking these phases into account through reweighting, we can solve the wrong convergence problem. However, this prescription may lead to a recurrence of the sign problem in the complex Langevin method for quantum manybody systems. \\ ( http://arxiv.org/abs/1511.02437 , 578kb)  \\ arXiv:1511.02446 (*crosslisting*) Date: Sun, 8 Nov 2015 06:15:34 GMT (18kb)
Title: Rotationally invariant ensembles of integrable matrices Authors: Emil A. Yuzbashyan, B. Sriram Shastry, Jasen A. Scaramazza Categories: mathph condmat.statmech math.MP Comments: 10 pages \\ We construct ensembles of random integrable matrices with any prescribed number of nontrivial integrals and formulate integrable matrix theory (IMT)  a counterpart of random matrix theory (RMT) for quantum integrable models. A typeM family of integrable matrices consists of exactly NM independent commuting NbyN matrices linear in a real parameter. We first develop a rotationally invariant parameterization of such matrices, previously only constructed in a preferred basis. For example, an arbitrary choice of a vector and two commuting Hermitian matrices defines a type1 family and vice versa. Higher types similarly involve a random vector and two matrices. The basisindependent formulation allows us to derive the joint probability density for integrable matrices, in a manner similar to the construction of Gaussian ensembles in the RMT. \\ ( http://arxiv.org/abs/1511.02446 , 18kb)  \\ arXiv:1511.02613 (*crosslisting*) Date: Mon, 9 Nov 2015 09:41:42 GMT (4580kb,D)
Title: Nonadditivity of Critical Casimir Forces Authors: Sathyanarayana Paladugu, Agnese Callegari, Yazgan Tuna, Lukas Barth, Siegfried Dietrich, Andrea Gambassi, Giovanni Volpe Categories: condmat.soft condmat.statmech physics.optics Comments: 12 pages, 8 figures \\ In soft and condensed matter physics, effective interactions often emerge as a result of the spatial confinement of a fluctuating field. For instance, microscopic particles in a binary liquid mixture are subject to critical Casimir forces whenever their surfaces confine the thermal fluctuations of the order parameter of this kind of solvent, the range of which diverges upon approaching the critical demixing point. Critical Casimir forces are predicted to be nonadditive on a particular large scale. However, a direct experimental evidence of this fact is still lacking. Here, we fill in this gap by reporting the experimental measurement of the associated manybody effects. In particular, we focus on three colloidal particles in optical traps and observe that the critical Casimir force exerted on one of them by the other two colloids differs from the sum of the forces they exert separately. The magnitude and range of this threebody effect turn out to depend sensitively on the distance from the critical point of the solvent and on the preferential adsorption at the surfaces of the colloids for the two components of the mixture. \\ ( http://arxiv.org/abs/1511.02613 , 4580kb)  \\ arXiv:1511.02835 (*crosslisting*) Date: Mon, 9 Nov 2015 20:43:22 GMT (14kb)
Title: Variational Approach and Deformed Derivatives Authors: Jos\'e Weberszpil and Jos\'e Abdalla Helay\"elNeto Categories: mathph condmat.statmech hepth math.MP nlin.SI quantph Comments: 13 pages. arXiv admin note: text overlap with arXiv:1502.07606 \\ Recently, we have demonstrated that there exists a possible relationship between qdeformed algebras in two different contexts of Statistical Mechanics, namely, the Tsallis' framework and the Kaniadakis' scenario, with a local form of fractionalderivative operators for fractal media, the socalled Hausdorff derivatives, mapped into a continuous medium with a fractal measure. Here, in this paper, we present an extension of the traditional calculus of variations for systems containing deformedderivatives embedded into the Lagrangian and the Lagrangian densities for classical and field systems. The results extend the classical EulerLagrange equations and the Hamiltonian formalism. The resulting dynamical equations seem to be compatible with those found in the literature, specially with massdependent and with nonlinear equations for systems in classical and quantum mechanics. Examples are presented to illustrate applications of the formulation. Also, the conserved Nether current, are worked out. \\ ( http://arxiv.org/abs/1511.02835 , 14kb) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  \\ arXiv:1304.1080 replaced with revised version Mon, 9 Nov 2015 08:27:37 GMT (20kb)
Title: OffDiagonal Ekpyrotic Scenarios and Equivalence of Modified, Massive and/or Einstein Gravity Authors: Sergiu I. Vacaru Categories: physics.genph Comments: latex2e, 12pt, 12 pages, v4 with updated affiliations and substantial modifications requested by editor and referee and accepted by Phys. Lett. B \\ ( http://arxiv.org/abs/1304.1080 , 20kb)  \\ arXiv:1403.7004 replaced with revised version Mon, 9 Nov 2015 16:42:24 GMT (309kb)
Title: Structural consequences of the coupling of gravitons Authors: Walter Gessner Categories: physics.genph Comments: 9 pages, 0 figures \\ ( http://arxiv.org/abs/1403.7004 , 309kb)  \\ arXiv:1507.03515 replaced with revised version Sun, 8 Nov 2015 05:58:10 GMT (12kb)
Title: Anisotropic dark energy model with a hybrid scale factor Authors: B. Mishra and S.K. Tripathy Categories: physics.genph Journalref: Modern Physics Letters A, VOl 30, No 36 (2015)1550175 DOI: 10.1142/S0217732315501758 \\ ( http://arxiv.org/abs/1507.03515 , 12kb)  \\ arXiv:1505.00312 replaced with revised version Mon, 9 Nov 2015 05:06:40 GMT (486kb)
Title: The Descent of Math Authors: Sara Imari Walker Categories: physics.histph Comments: 8 pages, Entry in 2015 FQXI Essay Competition \\ ( http://arxiv.org/abs/1505.00312 , 486kb)  \\ arXiv:1502.06776 replaced with revised version Mon, 9 Nov 2015 09:23:58 GMT (1465kb)
Title: Quantitatively Analyzing Phonon Spectral Contribution of Thermal Conductivity Based on NonEquilibrium Molecular Dynamics Simulation I: From Space Fourier Transform Authors: Yanguang Zhou, Xiaoliang Zhang, and Ming Hu Categories: condmat.mtrlsci \\ ( http://arxiv.org/abs/1502.06776 , 1465kb)  \\ arXiv:1503.04790 replaced with revised version Sat, 7 Nov 2015 19:14:44 GMT (4058kb)
Title: Spinfluctuation mechanism of anomalous temperature dependence of magnetocrystalline anisotropy in itinerant magnets Authors: Ivan A. Zhuravlev, Vladimir P. Antropov, and Kirill D. Belashchenko Categories: condmat.mtrlsci Comments: 9 pages, 10 figures (including supplemental material) \\ ( http://arxiv.org/abs/1503.04790 , 4058kb)  \\ arXiv:1505.05904 replaced with revised version Mon, 9 Nov 2015 15:41:45 GMT (976kb)
Title: Grain boundary character distributions in nanocrystalline metals produced by different processing routes Authors: David B. Bober, Amirhossein Khalajhedayati, Mukul Kumar, Timothy J. Rupert Categories: condmat.mtrlsci Comments: 14 figures \\ ( http://arxiv.org/abs/1505.05904 , 976kb)  \\ arXiv:1510.02688 replaced with revised version Sun, 8 Nov 2015 22:05:01 GMT (783kb,D)
Title: Better Band Gaps with Asymptotically Corrected Local Exchange Potentials Authors: Prashant Singh, Manoj K. Harbola, M. Hemanadhan, Abhijit Mookerjee, and D. D. Johnson Categories: condmat.mtrlsci Comments: 8 pages, 3 figures \\ ( http://arxiv.org/abs/1510.02688 , 783kb)  \\ arXiv:1511.02070 replaced with revised version Mon, 9 Nov 2015 14:28:01 GMT (1435kb)
Title: Investigations on the energy balance in TDCB tests Authors: Olaf Hesebeck, Udo Meyer, Andrea Sondag, Markus Brede Categories: condmat.mtrlsci \\ ( http://arxiv.org/abs/1511.02070 , 1435kb)  \\ arXiv:1506.00464 replaced with revised version Mon, 9 Nov 2015 12:05:41 GMT (533kb)
Title: Coupled normal fluid and superfluid profiles of turbulent helium II in channels Authors: Luca Galantucci, Michele Sciacca, Carlo F. Barenghi Categories: condmat.other physics.fludyn Comments: 26 pages, 8 Figures, accepted for publication in Phys. Rev. B \\ ( http://arxiv.org/abs/1506.00464 , 533kb)  \\ arXiv:1405.0493 replaced with revised version Sat, 7 Nov 2015 14:28:28 GMT (9kb)
Title: Consciousness as a State of Matter Authors: Max Tegmark (MIT) Categories: physics.popph Comments: Minor typos corrected Journalref: New Scientist, April 12 2014, p 2831 \\ ( http://arxiv.org/abs/1405.0493 , 9kb)  \\ arXiv:1408.4355 replaced with revised version Sun, 8 Nov 2015 14:23:47 GMT (217kb)
Title: Weighted Hypernetworks Authors: JinLi Guo and XinYun Zhu Categories: physics.socph cs.SI Comments: 13 pages, 3 figures \\ ( http://arxiv.org/abs/1408.4355 , 217kb)  \\ arXiv:1502.07393 replaced with revised version Mon, 9 Nov 2015 20:58:32 GMT (2518kb)
Title: Crowdfunding Astronomy with Google Sky Authors: Travis S. Metcalfe (White Dwarf Research Corp.) Categories: physics.socph astroph.IM physics.popph Comments: 7 pages, 3 figures, Journal of Astronomy & Earth Sciences Education, accepted. Project website is at http://adoptastar.whitedwarf.org \\ ( http://arxiv.org/abs/1502.07393 , 2518kb)  \\ arXiv:1508.03571 replaced with revised version Fri, 6 Nov 2015 22:34:28 GMT (4171kb,D)
Title: From innovation to diversification: a simple competitive model Authors: Fabio Saracco, Riccardo Di Clemente, Andrea Gabrielli and Luciano Pietronero Categories: physics.socph physics.dataan qfin.GN Comments: 8 figures, 8 tables Journalref: PloS One 10(11): e0140420 (2015) DOI: 10.1371/journal.pone.0140420 \\ ( http://arxiv.org/abs/1508.03571 , 4171kb)  \\ arXiv:1508.05288 replaced with revised version Mon, 9 Nov 2015 10:32:13 GMT (365kb,D)
Title: Dynamics of Human Cooperation in Economic Games Authors: Martin Spanknebel and Klaus Pawelzik Categories: physics.socph cs.GT cs.LG math.DS \\ ( http://arxiv.org/abs/1508.05288 , 365kb)  \\ arXiv:1507.04920 replaced with revised version Mon, 9 Nov 2015 13:11:04 GMT (2319kb,D)
Title: $c$function and central charge of the sineGordon model from the nonperturbative renormalization group flow Authors: V. Bacs\'o, N. Defenu, A. Trombettoni, I. N\'andori Categories: condmat.statmech hepth Comments: 9 pages, 4 figures, v1, to be published on Nucl. Phys. B \\ ( http://arxiv.org/abs/1507.04920 , 2319kb)  \\ arXiv:1507.07812 replaced with revised version Sat, 7 Nov 2015 12:18:12 GMT (20kb)
Title: Comparison between Smoluchowski and Boltzmann approaches for selfpropelled rods Authors: Eric Bertin, Aparna Baskaran, Hugues Chat\'e, M. Cristina Marchetti Categories: condmat.statmech condmat.soft Comments: 11 pages, final version published in Phys. Rev. E Journalref: Phys. Rev. E 92, 042141 (2015) DOI: 10.1103/PhysRevE.92.042141 \\ ( http://arxiv.org/abs/1507.07812 , 20kb)  \\ arXiv:1507.08962 replaced with revised version Sat, 7 Nov 2015 03:24:42 GMT (1549kb)
Title: Emerging activity in bilayered dispersions with wakemediated interactions Authors: J\"org Bartnick, Andreas Kaiser, Hartmut L\"owen, Alexei Ivlev Categories: condmat.statmech condmat.soft Comments: 5 pages, 4 figures \\ ( http://arxiv.org/abs/1507.08962 , 1549kb)  \\ arXiv:1508.04042 replaced with revised version Mon, 9 Nov 2015 14:29:32 GMT (1986kb)
Title: Work fluctuationdissipation tradeoff in heat engines Authors: Ken Funo and Masahito Ueda Categories: condmat.statmech quantph Comments: 16 pages, 4 figures \\ ( http://arxiv.org/abs/1508.04042 , 1986kb)  \\ arXiv:1509.06145 replaced with revised version Sun, 8 Nov 2015 16:35:17 GMT (2714kb,D)
Title: Caliber based spectral gap optimization of order parameters (SGOOP) for sampling complex molecular systems Authors: Pratyush Tiwary and B. J. Berne Categories: condmat.statmech condmat.soft physics.chemph Comments: 7 pages, 4 figures; corrected missing figure number and added a reference \\ ( http://arxiv.org/abs/1509.06145 , 2714kb)  \\ arXiv:1510.03636 replaced with revised version Sat, 7 Nov 2015 08:15:35 GMT (469kb)
Title: Maximal Density and Percolation Threshold of Loose Packed Lattices Authors: Isak Avramov and Vesselin Tonchev Categories: condmat.statmech condmat.mtrlsci Comments: 10 pages, 5 figures \\ ( http://arxiv.org/abs/1510.03636 , 469kb) 
\\ arXiv:1510.05810 replaced with revised version Sat, 7 Nov 2015 03:52:46 GMT (3308kb)
Title: YangBaxter integrable models in experiments: from condensed matter to ultracold atoms Authors: Murray T. Batchelor and Angela Foerster Categories: condmat.statmech mathph math.MP quantph Comments: 25 pages, 14 figures. Review article intended for Exactly Solved Models and Beyond: a special issue in honour of R J Baxter's 75th birthday in J Phys A. Additional references, comments welcome \\ ( http://arxiv.org/abs/1510.05810 , 3308kb)  \\ arXiv:1508.01140 (*crosslisting*) replaced with revised version Fri, 6 Nov 2015 15:05:21 GMT (121kb,D)
Title: Disentangling the Quantum World Authors: Huw Price and Ken Wharton Categories: quantph physics.histph physics.popph Comments: 17 pages, 3 figures; significant revisions in response to referees' comments \\ ( http://arxiv.org/abs/1508.01140 , 121kb)  \\ arXiv:1510.06712 (*crosslisting*) replaced with revised version Thu, 5 Nov 2015 15:39:15 GMT (9kb)
Title: A Live Alternative to Quantum Spooks Authors: Huw Price and Ken Wharton Categories: quantph physics.histph physics.popph Comments: 7 pages; minor revisions \\ ( http://arxiv.org/abs/1510.06712 , 9kb)  \\ arXiv:1506.05767 replaced with revised version Sat, 7 Nov 2015 16:06:31 GMT (113kb,D)
Title: Electron spin coherence of shallow donors in natural and isotopically enriched germanium Authors: A. J. Sigillito, R. M. Jock, A. M. Tyryshkin, J. W. Beeman, E. E. Haller, K. M. Itoh, and S. A. Lyon Categories: condmat.meshall condmat.mtrlsci quantph \\ ( http://arxiv.org/abs/1506.05767 , 113kb)  \\ arXiv:1508.04605 replaced with revised version Mon, 9 Nov 2015 10:24:29 GMT (5305kb,D)
Title: Argument on superconductivity pairing mechanism from cobalt impurity doping in FeSe: spin ($s_{\pm}$) or orbital ($s_{++}$) fluctuation Authors: T. Urata, Y. Tanabe, K. K. Huynh, Y. Yamakawa, H. Kontani, and K. Tanigaki Categories: condmat.suprcon condmat.mtrlsci condmat.strel Comments: 10page, 11figures \\ ( http://arxiv.org/abs/1508.04605 , 5305kb)  \\ arXiv:1510.00808 replaced with revised version Mon, 9 Nov 2015 00:02:52 GMT (352kb)
Title: Strong Suppression of the Spin Hall Effect in the Spin Glass State Authors: Y. Niimi, M. Kimata, Y. Omori, B. Gu, T. Ziman, S. Maekawa, A. Fert, and Y. Otani Categories: condmat.meshall condmat.mtrlsci Comments: 5 pages, 4 figures Journalref: Phys. Rev. Lett. 115, 196602 (2015) DOI: 10.1103/PhysRevLett.115.196602 \\ ( http://arxiv.org/abs/1510.00808 , 352kb)  \\ arXiv:1510.03263 replaced with revised version Mon, 9 Nov 2015 06:55:51 GMT (2531kb)
Title: Anomalous polarization dependence of Raman scattering and crystallographic orientation of black phosphorus Authors: Jungcheol Kim, JaeUng Lee, Jinhwan Lee, Hyo Ju Park, Zonghoon Lee, Changgu Lee and Hyeonsik Cheong Categories: condmat.meshall condmat.mtrlsci Comments: 22+7 pages, 8+5 figures Journalref: Nanoscale, 7, 1870818715 (2015) DOI: 10.1039/C5NR04349B \\ ( http://arxiv.org/abs/1510.03263 , 2531kb)  \\ arXiv:1511.01302 replaced with revised version Mon, 9 Nov 2015 13:49:10 GMT (1986kb)
Title: TRIQS/DFTTools: A TRIQS application for ab initio calculations of correlated materials Authors: Markus Aichhorn, Leonid Pourovskii, Priyanka Seth, Veronica Vildosola, Manuel Zingl, Oleg E. Peil, Xiaoyu Deng, Jernej Mravlje, Gernot J. Kraberger, Cyril Martins, Michel Ferrero, Olivier Parcollet Categories: condmat.strel condmat.mtrlsci Comments: 18 pages, 6 figures \\ ( http://arxiv.org/abs/1511.01302 , 1986kb)  \\ arXiv:0905.1911 replaced with revised version Mon, 9 Nov 2015 18:49:53 GMT (56kb)
Title: Heisenberg Symmetry and Collective Modes of One Dimensional Unitary Correlated Fermions Authors: Kumar Abhinav, Chandrasekhar Bhamidipati, Vivek M Vyas, Prasanta K. Panigrahi Categories: condmat.quantgas condmat.other Comments: 5 pages, revamped version for clarity \\ ( http://arxiv.org/abs/0905.1911 , 56kb)  \\ arXiv:1412.5601 (*crosslisting*) replaced with revised version Sat, 7 Nov 2015 04:59:49 GMT (400kb,D)
Title: Effective field theory for spacetime symmetry breaking Authors: Yoshimasa Hidaka, Toshifumi Noumi, Gary Shiu Categories: hepth astroph.CO condmat.other hepph Comments: 59 pages, 4 figures; v2: minor revision, published version. Appendix B is added Reportno: RIKENMP96, RIKENQHP171, MADTH1410 Journalref: Phys. Rev. D 92, 045020 (2015) DOI: 10.1103/PhysRevD.92.045020 \\ ( http://arxiv.org/abs/1412.5601 , 400kb)  \\ arXiv:1505.00457 (*crosslisting*) replaced with revised version Sat, 7 Nov 2015 08:40:41 GMT (8447kb,D)
Title: Modeling Memetics using Edge Diversity Authors: Akrati Saxena, S.R.S. Iyengar, Yayati Gupta Categories: cs.SI physics.socph \\ ( http://arxiv.org/abs/1505.00457 , 8447kb)  \\ arXiv:1507.07838 (*crosslisting*) replaced with revised version Sat, 7 Nov 2015 08:47:37 GMT (1595kb,D)
Title: Shifting Behaviour of Users: Towards Understanding the Fundamental Law of Social Networks Authors: Yayati Gupta, S. R. S. Iyengar, Jaspal Singh Saini and Nidhi Sridhar Categories: cs.SI physics.socph \\ ( http://arxiv.org/abs/1507.07838 , 1595kb)  \\ arXiv:1510.03059 (*crosslisting*) replaced with revised version Mon, 9 Nov 2015 17:08:36 GMT (242kb,D)
Title: Influence of network topology on cooperative problemsolving systems Authors: Jos\'e F. Fontanari and Francisco A. Rodrigues Categories: cs.SI nlin.AO physics.socph \\ ( http://arxiv.org/abs/1510.03059 , 242kb)  \\ arXiv:1412.7320 (*crosslisting*) replaced with revised version Mon, 9 Nov 2015 11:21:36 GMT (87kb)
Title: Nonlocal random motions: The trapping problem Authors: Piotr Garbaczewski, Mariusz \.Zaba Categories: mathph condmat.statmech math.MP quantph Comments: 11 pp, 7 figures. In this version, minor correction next to Eq. (7) Journalref: Acta Phys. Pol. B 46 (2), 231246, (2015) DOI: 10.5506/APhysPolB.46.231 \\ ( http://arxiv.org/abs/1412.7320 , 87kb)  \\ arXiv:1505.07850 (*crosslisting*) replaced with revised version Mon, 9 Nov 2015 01:57:26 GMT (30kb,D)
Title: Quantum speed limits for leakage and decoherence Authors: Iman Marvian and Daniel A. Lidar Categories: quantph condmat.statmech Comments: 4 pages+15 pages Supplementary Material, references added, minor edits and clarifications, published version \\ ( http://arxiv.org/abs/1505.07850 , 30kb)  \\ arXiv:1510.04394 replaced with revised version Mon, 9 Nov 2015 15:25:18 GMT (299kb)
Title: Moderate Point: Balanced Entropy and Enthalpy Contributions in Soft Matter Authors: Yanting Wang Categories: condmat.soft condmat.statmech Comments: 4 Page, 3 figures \\ ( http://arxiv.org/abs/1510.04394 , 299kb)  \\ arXiv:1511.01330 (*crosslisting*) replaced with revised version Sun, 8 Nov 2015 15:18:31 GMT (9kb)
Title: Entangling Fractals Authors: Amin Faraji Astaneh Categories: hepth condmat.statmech Comments: 4 pages, Typos fixed, References and comments added \\ ( http://arxiv.org/abs/1511.01330 , 9kb) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% For subscribe options to combined physics archives, email To: physics@arxiv.org, Subject: subscribe  _______________________________________ Snark Más información en http://mailman.uba.ar/mailman/listinfo/snark



