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We investigate the effects of subsonic turbulence on a normal mode of oscillation [a possible origin of the high-frequency quasi-periodic oscillations (HFQPOs) within some black hole accretion disks]. We consider perturbations of a…

高能天体物理现象 · 物理学 2021-10-27 Robert V. Wagoner , Celia R. Tandon

We study fluids of hard rods in the vicinity of hard spherical and cylindrical surfaces at densities below the isotropic-nematic transition. The Onsager second virial approximation is applied, which is known to yield exact results for the…

软凝聚态物质 · 物理学 2009-10-31 B. Groh , S. Dietrich

The structural properties of confined single-file hard-disk fluids are studied analytically by means of a mapping of the original system onto a one-dimensional mixture of non-additive hard rods, the mapping being exact in the polydisperse…

软凝聚态物质 · 物理学 2023-07-25 Ana M. Montero , Andrés Santos

We present a theory of vortex liquid-to-solid transition in homogeneous quasi 2D superconductors. The free energy is written as a functional l of density of zeroes of the fluctuating order parameter. The transition is weakly first-order and…

凝聚态物理 · 物理学 2009-10-22 Igor Herbut , Zlatko Tesanovic

To investigate the influence of orientational degrees of freedom onto the dynamics of molecular systems in its supercooled and glassy regime we have solved numerically the mode-coupling equations for hard ellipsoids of revolution. For a…

无序系统与神经网络 · 物理学 2009-11-07 A. Latz , M. Letz , R. Schilling , Th. Theenhaus

Numerous soft materials jam into an amorphous solid at high packing fraction. This non-equilibrium phase transition is best understood in the context of a model system in which particles repel elastically when they overlap. Recently,…

软凝聚态物质 · 物理学 2020-08-26 Dion J. Koeze , Lingtjien Hong , Abhishek Kumar , Brian P. Tighe

We use entanglement to track the superfluid-insulator transition (SIT) in disordered fermionic superfluids described by the one-dimensional Hubbard model. Entanglement is found to have remarkable signatures of the SIT driven by i) the…

超导电性 · 物理学 2019-10-30 G. A. Canella , V. V. França

We investigate the constraints on the superfluid fraction of an amorphous solid following from an upper bound derived by Leggett. In order to accomplish this, we use as input density profiles generated for amorphous solids in a variety of…

无序系统与神经网络 · 物理学 2011-04-01 Giulio Biroli , Bryan Clark , Laura Foini , Francesco Zamponi

We investigate the dynamics of a driven system of dissipative hard spheres in the framework of mode-coupling theory. The dissipation is modeled by normal restitution, and driving is applied to individual particles in the bulk. In such a…

软凝聚态物质 · 物理学 2010-06-29 W. Till Kranz , Matthias Sperl , Annette Zippelius

We consider the relaxation of an initial non-equilibrium state in a one-dimensional fluid of hard rods. Since it is an interacting integrable system, we expect it to reach the Generalized Gibbs Ensemble (GGE) at long times for generic…

统计力学 · 物理学 2024-06-04 Sahil Kumar Singh , Abhishek Dhar , Herbert Spohn , Anupam Kundu

We examine the structural and dynamic properties of confined binary hard-sphere mixtures designed to mimic realizable colloidal thin films. Using computer simulations, governed by either Newtonian or overdamped Langevin dynamics, together…

软凝聚态物质 · 物理学 2015-05-01 Jonathan A. Bollinger , Avni Jain , James Carmer , Thomas M. Truskett

Glass transition and random packing in the hard sphere system have attracted great attention due to the important role of the system in the investigation of diverse real systems including liquids, colloidal dispersions, supercooled liquids,…

统计力学 · 物理学 2007-05-23 Hongqin Liu

We present a computer simulation study of the crystalline phases of hard ellipsoids of revolution. A previous study [Phys. Rev. E, \textbf{75}, 020402 (2007)] showed that for aspect ratios $a/b\ge 3$ the previously suggested stretched-fcc…

统计力学 · 物理学 2015-05-13 M. Radu , P. Pfleiderer , T. Schilling

We extend the results from the first part of this series of two papers by examining hyperuniformity in heterogeneous media composed of impenetrable anisotropic inclusions. Specifically, we consider maximally random jammed packings of hard…

统计力学 · 物理学 2015-05-27 Chase E. Zachary , Yang Jiao , Salvatore Torquato

Elementary smooth functions (beyond contact) are employed to construct pair correlation functions that mimic jammed disordered sphere packings. Using the g2-invariant optimization method of Torquato and Stillinger [J. Phys. Chem. B 106,…

统计力学 · 物理学 2009-11-13 Adam B. Hopkins , Frank H. Stillinger , Salvatore Torquato

We analyse the anisotropy of homogeneous turbulence in an electrically conducting fluid submitted to a uniform magnetic field, for low magnetic Reynolds number, in the quasi- static approximation. We interpret disagreeing previous…

流体动力学 · 物理学 2012-07-23 B. F. N. Favier , F. S. Godeferd , C. Cambon , A. Delache , W. J. T. Bos

A proposal to link the equation of state of a monocomponent hard-disk fluid to the equation of state of a polydisperse hard-disk mixture is presented. Event-driven molecular dynamics simulations are performed to obtain data for the…

软凝聚态物质 · 物理学 2017-12-07 Andrés Santos , Santos B. Yuste , Mariano López de Haro , Vitaliy Ogarko

We show, by using direct numerical simulations and theory, how, by increasing the order of dissipativity ($\alpha$) in equations of hydrodynamics, there is a transition from a dissipative to a conservative system. This remarkable result,…

混沌动力学 · 物理学 2015-06-19 Debarghya Banerjee , Samriddhi Sankar Ray

In this paper we present a new thermodynamically consistent phase transition model describing the evolution of a liquid substance, e.g., water, in a rigid container $\Omega$ when we freeze the container. Since the density $\varrho_{2}$ of…

偏微分方程分析 · 数学 2014-01-10 Michel Fremond , Elisabetta Rocca

We generate point configurations (PCs) by thresholding the local energy of the Ashkin-Teller model in two dimensions (2D) and study the percolation transition at different values of $\lambda$ along the critical Baxter line by varying the…

统计力学 · 物理学 2025-07-21 Sayantan Mitra , Indranil Mukherjee , P. K. Mohanty