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We study a class of close-packed dimer models on the square lattice, in the presence of small but extensive perturbations that make them non-determinantal. Examples include the 6-vertex model close to the free-fermion point, and the dimer…

数学物理 · 物理学 2020-07-14 Alessandro Giuliani , Vieri Mastropietro , Fabio Lucio Toninelli

We discuss some aspects of the continuum limit of some lattice models, in particular the $2D$ $O(N)$ models. The continuum limit is taken either in an infinite volume or in a box whose size is a fixed fraction of the infinite volume…

高能物理 - 格点 · 物理学 2015-06-25 A. Patrascioiu , E. Seiler

A diffused interface model describing the evolution of two conterminous incompressible fluids in a porous medium is discussed. The system consists of the Cahn-Hilliard equation with Flory-Huggins logarithmic potential, coupled via surface…

偏微分方程分析 · 数学 2024-07-24 Nitu Lakhmara , Hari Shankar Mahato

We show that to account for the full spectrum of surface fluctuations from low scattering vector qd << 1 (classical capillary wave theory) to high qd > 1 (bulk-like fluctuations), one must take account of the interface's bending rigidity at…

软凝聚态物质 · 物理学 2009-11-13 Edgar M. Blokhuis

Interfaces in phase-separated driven liquids are one example of how energy input at the single-particle level changes the long-length-scale material properties of nonequilibrium systems. Here, we measure interfacial fluctuations in…

统计力学 · 物理学 2019-03-27 Clara del Junco , Suriyanarayanan Vaikuntanathan

We introduce and investigate the stochastic dynamics of the density of local extrema (minima and maxima) of non-equilibrium surface fluctuations. We give a number of exact, analytic results for interface fluctuations described by linear…

统计力学 · 物理学 2009-10-31 Z. Toroczkai , G. Korniss , S. Das Sarma , R. K. P. Zia

We study two one-dimensional variants of the contact process: the contact-and-barrier process, where the population evolves in a region delimited by a randomly moving barrier, and the multitype contact process, in which two species compete…

概率论 · 数学 2026-02-27 Isabella Alvarenga , Daniel Valesin

This work outlines a new three-dimensional diffuse interface finite volume method for the simulation of multiple solid and fluid components featuring large deformations, sliding and void opening. This is achieved by extending an existing…

计算物理 · 物理学 2021-06-11 Tim Wallis , Philip T. Barton , Nikolaos Nikiforakis

The height-height correlation function for a fluctuating interface between two coexisting bulk phases is derived by means of general equilibrium properties of the corresponding density-density correlation function. A wavelength-dependent…

软凝聚态物质 · 物理学 2009-11-13 Thorsten Hiester

In this paper we study the dynamics of an incompressible viscous fluid evolving in an open-top container in two dimensions. The fluid mechanics are dictated by the Navier-Stokes equations. The upper boundary of the fluid is free and evolves…

偏微分方程分析 · 数学 2020-10-30 Yan Guo , Ian Tice

The effect of thermal fluctuations near a contact line of a liquid interface partially wetting an impenetrable substrate is studied analytically and numerically. Promoting both the interface profile and the contact line position to random…

软凝聚态物质 · 物理学 2016-11-15 D. Belardinelli , M. Sbragaglia , M. Gross , B. Andreotti

We propose a new definition of the interface in the context of the Bernoulli percolation model. We construct a coupling between two percolation configurations, one which is a standard percolation configuration, and one which is a…

概率论 · 数学 2019-06-24 Raphaël Cerf , Wei Zhou

We develop a reduced-order framework for optimizing mixing in two-dimensional incompressible flows. Instead of optimizing the full transport PDE, the method maximizes the length of advected material interfaces, leading to a…

数值分析 · 数学 2026-05-07 Ziqian Li , Enrique Zuazua

We consider two systems of two conservation laws that are defined on complementary, one-dimensional spatial intervals and coupled by an interface as a single port-Hamiltonian system. In case of a fixed interface position, we characterize…

偏微分方程分析 · 数学 2025-01-22 Alexander Kilian , Bernhard Maschke , Andrii Mironchenko , Fabian Wirth

We consider a discrete-time model for random interface growth which admits exact formulas and converges to the Polynuclear growth model in a particular limit. The height of the interface is initially flat and the evolution involves the…

概率论 · 数学 2023-08-28 Will FitzGerald

We study unique continuation over an interface using a stabilized unfitted finite element method tailored to the conditional stability of the problem. The interface is approximated using an isoparametric transformation of the background…

数值分析 · 数学 2024-08-19 Erik Burman , Janosch Preuss

We consider a one-dimensional fluctuating interfacial profile governed by the Edwards-Wilkinson or the stochastic Mullins-Herring equation for periodic, standard Dirichlet and Dirichlet no-flux boundary conditions. The minimum action path…

统计力学 · 物理学 2018-03-28 Markus Gross

We investigate non-equilibrium fluctuations of a solid surface governed by the stochastic Mullins-Herring equation with conserved noise. This equation describes surface diffusion of adatoms accompanied by their exchange between the surface…

统计力学 · 物理学 2016-02-17 Baruch Meerson , Arkady Vilenkin

To describe the full spectrum of surface fluctuations of the interface between phase-separated colloid-polymer mixtures from low scattering vector q (classical capillary wave theory) to high q (bulk-like fluctuations), one must take account…

软凝聚态物质 · 物理学 2009-11-13 Edgar M. Blokhuis , Joris Kuipers , Richard Vink

Using the optimal fluctuation method, we evaluate the short-time probability distribution $P (\bar{H}, L, t=T)$ of the spatially averaged height $\bar{H} = (1/L) \int_0^L h(x, t=T) \, dx$ of a one-dimensional interface $h(x, t)$ governed by…

统计力学 · 物理学 2023-12-12 Timo Schorlepp , Pavel Sasorov , Baruch Meerson