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We study the impact of stochastic perturbations to deterministic dynamical systems using the formalism of the Ruelle response theory and explore how stochastic noise can be used to explore the properties of the underlying deterministic…

统计力学 · 物理学 2015-05-27 Valerio Lucarini

We present a computational alternative to probabilistic simulations for non-smooth stochastic dynamical systems that are prevalent in engineering mechanics. As examples, we target (1) stochastic elasto-plastic problems, which involve…

概率论 · 数学 2019-05-23 Laurent Mertz , Georg Stadler , Jonathan Wylie

Nonlinear dynamical systems are sometimes under the influence of random fluctuations. It is desirable to examine possible bifurcations for stochastic dynamical systems when a parameter varies. A computational analysis is conducted to…

动力系统 · 数学 2012-01-31 Huiqin Chen , Jinqiao Duan , Chengjian Zhang

In this paper the author presents the results of the preliminary investigation of fractional dynamical systems based on the results of numerical simulations of fractional maps. Fractional maps are equivalent to fractional differential…

混沌动力学 · 物理学 2018-07-06 Mark Edelman

We study the effects of additive and multiplicative noise on the solution landscape of nematic liquid crystals confined to a square domain within the Landau-de Gennes framework, as well as the impact of additive noise on the symmetric…

软凝聚态物质 · 物理学 2023-08-15 James Luke Dalby , Apala Majumdar , Yue Wu , Asha Kisan Dond

We survey the theory of attractors of nonlinear Hamiltonian partial differential equations since its appearance in 1990. These are results on global attraction to stationary states, to solitons and to stationary orbits, on adiabatic…

偏微分方程分析 · 数学 2023-01-02 Andrew Comech , Alexander Komech , Elena Kopylova

In the paper, assuming that the motion of rarefied gases in a bounded domain is governed by the angular cutoff Boltzmann equation with diffuse reflection boundary, we study the effects of both soft intermolecular interaction and…

偏微分方程分析 · 数学 2019-09-04 Renjun Duan , Feimin Huang , Yong Wang , Zhu Zhang

We consider a class of Cahn-Hilliard equation that characterizes phase separation phenomena of binary mixtures in a bounded domain $\Omega \subset \mathbb{R}^d$ $(d\in \{2,3\})$ with non-permeable boundary. The equations in the bulk are…

偏微分方程分析 · 数学 2024-06-03 Maoyin Lv , Hao Wu

We study the mobility of an overdamped particle in a periodic potential tilted by a constant force. The mobility exhibits a stochastic resonance in inhomogeneous systems with space dependent friction coefficient. The result indicates that…

统计力学 · 物理学 2009-10-31 Debasis Dan , Mangal. C. Mahato , A. M. Jayannavar

In many instances, the dynamical richness and complexity observed in natural phenomena can be related to stochastic drives influencing their temporal evolution. For example, random noise allied to spatial asymmetries may induce…

统计力学 · 物理学 2023-10-03 K. S. Fa , C. -L. Ho , Y. B. Matos , M. G. E da Luz

The Cahn--Hilliard equation is one of the most common models to describe phase segregation processes in binary mixtures. In recent times, various dynamic boundary conditions have been introduced to model interactions of the materials with…

偏微分方程分析 · 数学 2021-10-12 Patrik Knopf , Andrea Signori

Stochasticity is a defining feature of the pairwise forces governing interactions in biological systems-from molecular motors to cell-cell adhesion-yet its consequences on large-scale dynamics remain poorly understood. Here, we show that…

软凝聚态物质 · 物理学 2025-08-27 Henry Alston , Raphael Voituriez , Thibault Bertrand

Stochastic dynamical systems often contain nonlinearities which make it hard to compute probability density functions or statistical moments of these systems. For the moment computations, nonlinearities in the dynamics lead to unclosed…

最优化与控制 · 数学 2017-03-28 Khem Raj Ghusinga , Mohammad Soltani , Andrew Lamperski , Sairaj Dhople , Abhyudai Singh

The choice of the boundary conditions in mechanical problems has to reflect the interaction of the considered material with the surface, despite the assumption of the no-slip condition is preferred to avoid boundary terms in the analysis…

偏微分方程分析 · 数学 2020-09-22 Anna Abbatiello , Miroslav Bulíček , Erika Maringová

This paper presents estimates of the convergence of asymptotic dynamics of reaction-diffusion equations with nonlinear boundary conditions. We show how the convergence of the global attractors can be affected by the variations of diffusion…

偏微分方程分析 · 数学 2024-05-15 Flank D. M. Bezerra , Marcone C. Pereira , Leonardo Pires

The Cahn-Hilliard equation is the most common model to describe phase separation processes of a mixture of two components. For a better description of short-range interactions of the material with the solid wall, various dynamic boundary…

偏微分方程分析 · 数学 2020-10-20 Harald Garcke , Patrik Knopf

We study the stochastic motion of a droplet in a stochastic Cahn-Hilliard equation in the sharp interface limit for sufficiently small noise. The key ingredient in the proof is a deterministic slow manifold, where we show its stability for…

动力系统 · 数学 2019-08-06 Alexander Schindler , Dirk Blömker

We analyze the effect of additive fractional noise with Hurst parameter $H > \frac{1}{2}$ on fast-slow systems. Our strategy is based on sample paths estimates, similar to the approach by Berglund and Gentz in the Brownian motion case. Yet,…

概率论 · 数学 2020-02-19 Katharina Eichinger , Christian Kuehn , Alexandra Neamtu

We present simple classical dynamical models to address the question of introducing a stochastic nature in a time variable. These models include noise in the time variable but not in the "space" variable, which is opposite to the normal…

其他凝聚态物理 · 物理学 2007-05-23 Toru Ohira

We consider dissipative one-dimensional systems subject to a periodic force and study numerically how a time-varying friction affects the dynamics. As a model system, particularly suited for numerical analysis, we investigate the driven…

动力系统 · 数学 2015-06-05 Michele Bartuccelli , Jonathan Deane , Guido Gentile