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An asymmetric exclusion process with $N$ particles on $L$ sites is considered where particles can move one or two sites per infinitesimal time-step. An exact analysis for N=2 and a mean-field theory in comparison with simulations show…

统计力学 · 物理学 2009-04-01 Marko Woelki , Michael Schreckenberg

We generalize the Blonder-Tinkham-Klapwijk theory considering non-diagonal boundary conditions in the Bogoliubov-de Gennes scattering problem, to describe anomalous conductance features often reported for normal-metal/superconductor…

超导电性 · 物理学 2016-04-27 M. Catapano , F. Romeo , R. Citro , F. Giubileo

We point out that the transmission eigenvalue density and higher order correlation functions in chaotic cavities for an arbitrary number of incoming and outgoing leads $(N_1,N_2)$ are analytically known from the Jacobi ensemble of Random…

介观与纳米尺度物理 · 物理学 2008-03-10 Pierpaolo Vivo , Edoardo Vivo

Particle diffusion in a two dimensional curved surface embedded in $R_3$ is considered. In addition to the usual diffusion flow, we find a new flow with an explicit curvature dependence. New diffusion equation is obtained in $\epsilon$…

生物物理 · 物理学 2015-05-14 Naohisa Ogawa

We study the modulational instability of a shallow water model, with and without surface tension, which generalizes the Whitham equation to include bi-directional propagation. Without surface tension, the small amplitude periodic traveling…

偏微分方程分析 · 数学 2017-08-03 Ashish Kumar Pandey

The Fokker-Planck equation provides complete statistical description of a particle undergoing random motion in a solvent. In the presence of Lorentz force due to an external magnetic field, the Fokker-Planck equation picks up a tensorial…

As an enhanced version of existing results on Kac's propagation of chaos, which describes the convergence of mean-field particle systems to a system of independent McKean-Vlasov particles as the number of particles tends to infinity, we…

概率论 · 数学 2026-05-12 Xiao-Yu Zhao

Experimental measurements of properties of the large-scale circulation (LSC) in turbulent convection of a fluid heated from below in a cylindrical container of aspect ratio one are presented and used to test a model of diffusion in a…

流体动力学 · 物理学 2009-11-13 Eric Brown , Guenter Ahlers

We consider a non relativistic particle on the surface of a semi-infinite cylinder of circumference $L$ submitted to a perpendicular magnetic field of strength $B$ and to the potential of impurities of maximal amplitude $w$. This model is…

数学物理 · 物理学 2009-11-07 Nicolas Macris

We present here a formulation for the calculation of the configuration-averaged optical conductivity in random alloys. Our formulation is based on the augmented-space theorem introduced by one of us [A. Mookerjee, J. Phys. C: Solid State…

材料科学 · 物理学 2007-05-23 Kamal Krishna Saha , Abhijit Mookerjee

Commensurability oscillations in the magnetoresistivity of a two-dimensional electron gas in a two-dimensional lateral superlattice are studied in the framework of quasiclassical transport theory. It is assumed that the impurity scattering…

无序系统与神经网络 · 物理学 2009-11-07 A. D. Mirlin , E. Tsitsishvili , P. Woelfle

We study the motion of passive tracers in a two-dimensional turbulent velocity field generated by the Kuramoto-Sivashinsky equation. By varying the direction of the velocity-vector with respect to the field-gradient we can continuously vary…

chao-dyn · 物理学 2008-02-03 Jonas Lundbek Hansen , Tomas Bohr

We study the differential conductance in the Kondo regime of a quantum dot coupled to multiple leads. When the bias is applied symmetrically on two of the leads ($V$ and $-V$, as usual in experiments), while the others are grounded, the…

介观与纳米尺度物理 · 物理学 2009-11-13 M. Tolea , I. V. Dinu , A. Aldea

We consider the motion of a particle governed by a weakly random Hamiltonian flow. We identify temporal and spatial scales on which the particle trajectory converges to a spatial Brownian motion. The main technical issue in the proof is to…

数学物理 · 物理学 2009-11-11 T. Komorowski , L. Ryzhik

We study propagation of electromagnetic surface waves on a metal-air interface in the case when the wave frequency is below the plasma frequency. We derive a reduced wave equation for a metal cylinder with a given radius of curvature. Using…

光学 · 物理学 2015-02-17 I. A. Kotelnikov , G. V. Stupakov

Quantum systems with discrete symmetries can usually be desymmetrized, but this strategy fails when considering transport in open systems with a symmetry that maps different openings onto each other. We investigate the joint probability…

介观与纳米尺度物理 · 物理学 2008-08-14 Marten Kopp , Henning Schomerus , Stefan Rotter

We address a problem which is mathematically reminiscent of the one of Anderson localization, although it is related to a strongly dissipative dynamics. Specifically, we study thermal convection in a horizontal porous layer heated from…

流体动力学 · 物理学 2013-10-03 Denis S. Goldobin , Elizaveta V. Shklyaeva

We reexamine the problem of delocalization of two-dimensional electrons in the presence of random magnetic field. By introducing spatial correlations among random fluxes, a well-defined metal-insulator transition characterized by a…

无序系统与神经网络 · 物理学 2007-05-23 D. N. Sheng , Z. Y. Weng

In this paper we study a second-order mean-field stochastic differential systems describing the movement of a particle under the influence of a time-dependent force, a friction, a mean-field interaction and a space and time-dependent…

概率论 · 数学 2022-10-10 T. C. Son , D. Q. Le , M. H. Duong

We develop an analytical theory for diffusive random lasers by coupling the transport theory of the disordered medium to the semiclassical laser rate equations, accounting for (coherent) stimulated and (incoherent) spontaneous emission.…

无序系统与神经网络 · 物理学 2012-03-27 R. Frank , A. Lubatsch , J. Kroha