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We present extensive Monte Carlo simulations on a two-dimensional XY model with a modified form of interaction potential. Thermodynamic quantities other than energy, specific heat etc (such as magnetization, susceptibility, fourth order…

统计力学 · 物理学 2013-05-24 Suman Sinha

In this paper, we study Ornstein-Uhlenbeck processes with Markov modulation, whose parameters depend on an external underlying two-state Markov process. Conditional mean and variance of such processes under given modulation are investigated…

概率论 · 数学 2021-03-11 Nikita Ratanov

The present work is devoted to introduce the backward Euler based modular time filter method for MHD flow. The proposed method improves the accuracy of the solution without a significant change in the complexity of the system. Since time…

数值分析 · 数学 2019-06-20 Aytekin Cibik , Fatma G. Eroglu , Songul Kaya

We investigate the Cahn-Hilliard equation with nonlinear diffusion and non-degenerate mobility modeling phase separation phenomena in complex systems (e.g., crystals and polymers). Previous results in the literature on this model relied on…

偏微分方程分析 · 数学 2025-10-10 Monica Conti , Stefania Gatti , Andrea Giorgini , Giulio Schimperna

To describe the simultaneous order-disorder transformation and phase separation Eguchi, Oki and Matsumura [\doi{10.1557/proc-21-589}] introduced the system of two equations: one equation, governing the evolution of a conserved order…

统计力学 · 物理学 2025-11-19 P. O. Mchedlov-Petrosyan , L. N. Davydov

In this work, we analytically investigate a degenerating PDE system for phase separation and complete damage processes considered on a nonsmooth time-dependent domain with mixed boundary conditions. The evolution of the system is described…

偏微分方程分析 · 数学 2016-09-16 Christian Heinemann , Christiane Kraus

We study a Cahn-Hilliard model for phase separation in composite materials with multiple periodic microstructures. These are modeled by considering a highly oscillating potential. The focus of this paper is in the case where the scales of…

偏微分方程分析 · 数学 2026-02-16 Riccardo Cristoferi , Luca Pignatelli

In this contribution, we deal with the longtime behavior of the solutions to the fractional variant of the Cahn-Hilliard system, with possibly singular potentials, that we have recently investigated in the paper `Well-posedness and…

偏微分方程分析 · 数学 2019-10-14 Pierluigi Colli , Gianni Gilardi , Jürgen Sprekels

We derive the normal form for the delay-induced Hopf bifurcation in the first-order phase-locked loop with time delay by the multiple scaling method. The resulting periodic orbit is confirmed by numerical simulations. Further detailed…

混沌动力学 · 物理学 2009-11-11 Michael Schanz , Axel Pelster

We present a modified version of the one-dimensional sine-Gordon that exhibits a thermodynamic, roughening phase transition, in analogy with the 2D usual sine-Gordon model. The model is suited to study the crystalline growth over an…

统计力学 · 物理学 2009-11-10 Saul Ares , Angel Sanchez

We consider the two-dimensional Cahn-Hilliard equation with logarithmic potentials and periodic boundary conditions. We employ the standard semi-implicit numerical scheme which treats the linear fourth-order dissipation term implicitly and…

数值分析 · 数学 2021-06-21 Dong Li , Tao Tang

We use the matching method to investigate the first-order phase transition in holographic superconductor and superfluid. We first use the simple holographic superconductor model to describe the matching method and mention how to see the…

高能物理 - 理论 · 物理学 2015-06-16 Wung-Hong Huang

We give an explicit representation for the transition law of a tempered stable Ornstein-Uhlenbeck process and use it to develop a rejection sampling algorithm for exact simulation of increments from this process. Our results apply to…

概率论 · 数学 2020-05-19 Michael Grabchak

We have considered the model of the phase transition of the second order for the Coulomb frustrated 2D charged system. The coupling of the order parameter with the charge was considered as the local temperature. We have found that in such…

强关联电子 · 物理学 2018-04-04 R. F. Mamin , T. S. Shaposhnikova , V. V. Kabanov

A unified framework for coupled Navier-Stokes/Cahn-Hilliard equations is developed using, as a basis, a balance law for microforces in conjunction with constitutive equations consistent with a mechanical version of the second law. As a…

patt-sol · 物理学 2025-02-25 Morton E. Gurtin , Debra Polignone , Jorge Vinals

The unique solvability and error analysis of the original Lagrange multiplier approach proposed in [8] for gradient flows is studied in this paper. We identify a necessary and sufficient condition that must be satisfied for the nonlinear…

数值分析 · 数学 2024-05-07 Qing Cheng , Jie Shen , Cheng Wang

Based on a simple observation that a classical second order differential equation may be decomposed into a set of two first order equations, we introduce a Hamiltonian framework to quantize the damped systems. In particular, we analyze the…

高能物理 - 理论 · 物理学 2015-06-26 Chihong Chou

We study the phase-ordering kinetics of the one-dimensional Heisenberg model with conserved order parameter, by means of scaling arguments and numerical simulations. We find a rich dynamical pattern with a regime characterized by two…

统计力学 · 物理学 2009-06-15 R. Burioni , F. Corberi , A. Vezzani

Underground gas storage is central to both climate mitigation and energy transition strategies, supporting both long-term carbon sequestration and seasonal hydrogen storage. A key mechanism governing the fate of injected gases is Ostwald…

软凝聚态物质 · 物理学 2025-09-03 Mohammad Salehpour , Tian Lan , Nicolas Bueno , Md Zahidul Islam Laku , Yashar Mehmani , Benzhong Zhao

We study the homogenization of a stochastic Schr\"odinger equation with a large periodic potential in solid state physics. Denoting by $\varepsilon$ the period, the potential is scaled as $\varepsilon^{-2}$. Under a generic assumption on…

偏微分方程分析 · 数学 2020-05-14 Ao Zhang , Jinqiao Duan