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We demonstrate the phenomenon of stochastic resonance (SR) for discrete-time dynamical systems. We investigate various systems that are not necessarily bistable, but do have two well defined states, switching between which is aided by…

chao-dyn · 物理学 2009-10-30 Prashant M. Gade , Renuka Rai , Harjinder Singh

In this paper, we study the existence of SRB measures and their properties for infinite dimensional dynamical systems in a Hilbert space. We show several results including (i) if the system has a partially hyperbolic attractor with…

动力系统 · 数学 2015-08-14 Zeng Lian , Peidong Liu , Kening Lu

This work investigates the long-term distributional behavior of the reversible Selkov lattice systems defined on the set $\mathbb{Z}$ and driven by locally Lipschitz \emph{L\'{e}vy noises}, which possess two pairs of oppositely signed…

偏微分方程分析 · 数学 2026-01-05 Guofu Li , Jianxin Wu , Yunshun Wu

In this paper, we mainly consider the long-time behavior of solutions for the Cahn-Hilliard-Navier-Stokes system with dynamic boundary conditions and two polynomial growth nonlinearities of arbitrary order. We prove the existence of a…

动力系统 · 数学 2017-03-17 Bo You , Fang Li , Chang Zhang

In this paper, we investigate the nonlocal reaction-diffusion equation driven by stationary noise, which is a regular approximation to white noise and satisfies certain properties. We show the existence of random attractor for the equation.…

动力系统 · 数学 2025-11-04 Xiuling Gui , Jin Yang , Chunfeng Wang , Jing Hou , Ji Shu

A replicator equation with mutation processes is numerically studied. Without any mutations, two characteristics of the replicator dynamics are known: an exponential divergence of the dominance period, and hierarchical orderings of the…

混沌动力学 · 物理学 2009-10-31 K. Hashimoto , T. Ikegami

We present and study a novel class of one-dimensional Hilbert space eigenfunction transforms that diagonalize analytic difference operators encoding the (reduced) two-particle relativistic hyperbolic Calogero-Moser dynamics. The scattering…

数学物理 · 物理学 2016-07-25 Steven Haworth , Simon Ruijsenaars

We study the interplay between reversibility, geometry, and the choice of multiplicative noise (in particular It\^{o}, Stratonovich, Klimontovich) in stochastic differential equations (SDEs). Building on a unified geometric framework, we…

概率论 · 数学 2025-11-06 Mario Ayala , Nicolas Dirr , Grigorios A. Pavliotis , Johannes Zimmer

In this work we consider the non local evolution equation with time-dependent terms which arises in models of phase separation in $\mathbb{R}^N$ \[ \partial_t u=- u + g \left(\beta(J*u) +\beta h(t,u)\right) \] under some restrictions on…

动力系统 · 数学 2014-01-06 Flank D. M. Bezerra , Miriam da S. Pereira , Severino H. da Silva

We report the experimental evidence of the existence of a random attractor in a fully developed turbulent swirling flow. By defining a global observable which tracks the asymmetry in the flux of angular momentum imparted to the flow, we can…

We investigate the global well-posedness and asymptotic behavior of $L^2$-solutions to stochastic nonlinear Schr\"odinger equations with multiplicative noise driven by continuous square integrable martingales with density. Our approach…

概率论 · 数学 2026-05-12 Isamu Dôku , Shunya Hashimoto , Shuji Machihara

The main purpose of this paper is to give an upper bound of Hausdorff dimension of random attractors for a stochastic delayed parabolic equation in Banach spaces. The estimation of dimensions of random attractors are obtained by combining…

偏微分方程分析 · 数学 2024-02-20 Wenjie Hu , TomásCaraballo , Yueliang Duan

Here we consider the nonlocal Cahn-Hilliard equation with constant mobility in a bounded domain. We prove that the associated dynamical system has an exponential attractor, provided that the potential is regular. In order to do that a…

偏微分方程分析 · 数学 2013-05-07 Ciprian G. Gal , Maurizio Grasselli

We examine a previouly introduced attractor neural network model that explains the persistent activities of neurons in the anterior ventral temporal cortex of the brain. In this model, the coexistence of several attractors including…

无序系统与神经网络 · 物理学 2009-11-10 T. Uezu , A. Hirano , M. Okada

We discuss the effect of stochastic resonance in a simple model of magnetic reversals. The model exhibits statistically stationary solutions and bimodal distribution of the large scale magnetic field. We observe a non trivial amplification…

混沌动力学 · 物理学 2015-05-27 Roberto Benzi , Jean-Francois Pinton

A change of variables is introduced to reduce certain nonlinear stochastic evolution equations with multiplicative noise to the corresponding deterministic equation. The result is then used to investigate a stochastic porous medium…

概率论 · 数学 2007-07-24 S. V. Lototsky

As circuits continue to miniaturize, noise has become a significant obstacle to performance optimization. Stochastic resonance in logic circuits offers an innovative approach to harness noise constructively; however, current implementations…

适应与自组织系统 · 物理学 2024-10-11 Mengen Shen , Jianhua Yang , Miguel A. F. Sanjuán , Huatao Chen , Zhongqiu Wang

Stochastic Navier--Stokes equations in a thin three-dimensional domain are considered, driven by additive noise. The convergence of martingale solution of the stochastic Navier--Stokes equations in a thin three-dimensional domain to the…

概率论 · 数学 2020-08-18 Zdzisław Brzeźniak , Gaurav Dhariwal , Quoc Thong Le Gia

This article covers the construction of exponential attractors in two different functional space settings; one is in Hilbert's space, and the other is in the Banach space. The former relies on the squeezing properties of solution…

偏微分方程分析 · 数学 2021-02-23 Bong-Sik Kim

In this paper, we mainly study the regularity of pullback $\mathcal{D}$-attractors for a nonautonomous nonclassical diffusion equation with delay term $b(t,u_t)$ which contains some hereditary characteristics. Under a critical nonlinearity…

偏微分方程分析 · 数学 2023-03-28 Yuming Qin , Qitao Cai , Ming Mei , Ke Wang