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We study diffusion of colloids on a fluid-fluid interface using particle simulations and fluctuating hydrodynamics. Diffusion on a two-dimensional interface with three-dimensional hydrodynamics is known to be anomalous, with the collective…

统计力学 · 物理学 2018-08-01 R. P. Peláez , F. Balboa Usabiaga , S. Panzuela , Q. Xiao , R. Delgado-Buscalioni , A. Donev

A fourth-order nonlinear evolution equation is derived from a microscopic model for surface diffusion, namely, the continuum solid-on-solid model. We use the method developed by Varadhan for the computation of hydrodynamic scaling limit of…

概率论 · 数学 2007-05-23 Anamaria Savu

From a scale analysis of hydrodynamic phenomena having a significant action on the drift of an object in coastal ocean waters, we deduce equations modeling the associated hydrodynamic fields over a time period of several weeks. These models…

偏微分方程分析 · 数学 2008-01-08 Pierre Ailliot , Emmanuel Frenod , Valerie Monbet

We consider an interacting particle system which models the sterile insect technique. It is the superposition of a generalized contact process with exchanges of particles on a finite cylinder with open boundaries (see Kuoch et al., 2017).…

概率论 · 数学 2023-10-24 Mustapha Mourragui , Ellen Saada , Sonia Velasco

In this note, we study the hydrodynamic limit, in the hyperbolic space-time scaling, for a one-dimensional unpinned chain of quantum harmonic oscillators with random masses. To the best of our knowledge, this is among the first examples,…

数学物理 · 物理学 2021-08-06 Amirali Hannani

Critical analyses of well-known methods of derivation of kinetic and hydrodynamic equations is presented. Another method of derivation of kinetic and hydrodynamic equations from classic mechanics is described. It is shown that equations of…

等离子体物理 · 物理学 2014-07-02 L. S. Kuz'menkov , P. A. Andreev

Under the hydrodynamic equilibrium Buchdahl's conditions on the behavior of the density and the pressure, for regular fluid static circularly symmetric star in (2 + 1) dimensions in the presence of a cosmological constant, is established…

广义相对论与量子宇宙学 · 物理学 2014-12-19 Alberto A. Garcia Diaz

A new class of models, generalizing Asymmetric Exclusion Process for many parallel interacting channels, is proposed. We couple the models with boundary reservoirs, study boundary-driven phase transitions and show that usually taken…

统计力学 · 物理学 2011-07-13 V. Popkov , M. Salerno

We study the dynamics of the statistics of the energy transferred across a point along a quantum chain which is prepared in the inhomogeneous initial state obtained by joining two identical semi-infinite parts thermalized at two different…

统计力学 · 物理学 2020-10-28 Gabriele Perfetto , Andrea Gambassi

A new framework is introduced for constructing interpretable and truly reliable reduced models for multiscale problems in situations without scale separation. Hydrodynamic approximation to the kinetic equation is used as an example to…

计算物理 · 物理学 2019-10-31 Jiequn Han , Chao Ma , Zheng Ma , Weinan E

We consider an interacting unbounded spin system, with conservation of the mean spin. We derive quantitative rates of convergence to the hydrodynamic limit provided the single-site potential is a bounded perturbation of a strictly convex…

概率论 · 数学 2014-05-15 Max Fathi , Georg Menz

This paper considers the asymptotic limit of small aspect ratio between vertical and horizontal spatial scales for viscous isothermal compressible flows. In particular, it is observed that fast vertical acoustic waves arise and induce an…

偏微分方程分析 · 数学 2023-05-16 Xin Liu , Edriss S. Titi

The $t$-PNG model introduced in Aggarwal, Borodin, and Wheeler (2021) is a deformed version of the polynuclear growth (PNG) model. In this paper, we prove the hydrodynamic limit of the model using soft techniques. One key element of the…

概率论 · 数学 2022-12-16 Hindy Drillick , Yier Lin

The stochastic motion of a two-dimensional vesicle in linear shear flow is studied at finite temperature. In the limit of small deformations from a circle, Langevin-type equations of motion are derived, which are highly nonlinear due to the…

软凝聚态物质 · 物理学 2009-11-13 Reimar Finken , Antonio Lamura , Udo Seifert , Gerhard Gompper

We derive for the first time in the literature a rate of convergence in the hydrodynamic limit of the Kawasaki dynamics for a one-dimensional lattice system. We use an adaptation of the two-scale approach. The main difference to the…

概率论 · 数学 2018-07-30 Deniz Dizdar , Georg Menz , Felix Otto , Tianqi Wu

We conduct a numerical study of relativistic viscous fluid dynamics in the Density Frame for one-dimensional fluid flows. The Density Frame is a formulation of relativistic viscous hydrodynamics that is first-order in time, requires no…

We study a totally asymmetric simple exclusion process where jumps happen at rate one, except at the origin where the rate is lower. We prove a hydrodynamic scaling limit to a macroscopic profile described by a variational formula. The…

概率论 · 数学 2007-05-23 Timo Seppalainen

Here, we study the large-time limit of viscosity solutions of the Cauchy problem for second-order Hamilton--Jacobi--Bellman equations with convex Hamiltonians in the torus. This large-time limit solves the corresponding stationary problem,…

偏微分方程分析 · 数学 2020-06-09 Diogo A. Gomes , Hiroyoshi Mitake , Hung V. Tran

Baroclinic instability is a fundamental mechanism driving atmospheric dynamics. In this work, we revisit Pedlosky's two-layer model for finite amplitude baroclinic waves - a seminal framework for studying the unstable growth of finite…

大气与海洋物理 · 物理学 2026-04-16 Nicolas De Ro , Jonathan Demaeyer , Stéphane Vannitsem

For a static, perfect fluid sphere with a general equation of state, we obtain the relativistic equation of hydrostatic equilibrium, namely the Tolman-Oppenheimer-Volkov equation, as the thermodynamical equilibrium in the microcanonical, as…

广义相对论与量子宇宙学 · 物理学 2013-05-14 Zacharias Roupas