Abstract

We study nonautonomous stochastic sine-Gordon lattice systems with random coupled coefficients and multiplicative white noise. We first consider the existence of random attractors in a weighted space for this system and then establish the upper semicontinuity of random attractors as the intensity of noise approaches zero.

Highlights

  • We study nonautonomous stochastic sine-Gordon lattice systems with random coupled coefficients and multiplicative white noise

  • Stochastic lattice differential equations arise naturally in a wide variety of applications where the spatial structure has a discrete character and uncertainties are taken into account

  • Some works have been done regarding the existence of random attractors for stochastic lattice differential equations

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Summary

Introduction

Stochastic lattice differential equations arise naturally in a wide variety of applications where the spatial structure has a discrete character and uncertainties are taken into account. Zhou and Wei [11] considered the existence of random attractors for second-order lattice system with random coupled coefficients and multiplicative white noise. Motivated by [2, 11], we will study the asymptotic behavior of solutions of the following nonautonomous stochastic sineGordon lattice systems with random coupled coefficients and multiplicative white noise: for every τ ∈ R and t > τ, d2ui dt. To the best of our knowledge, there are no results on nonautonomous stochastic sine-Gordon lattice systems with random coupled coefficients and multiplicative white noise. We first consider the existence of a tempered random attractor in a weighted space lρ2 × lρ for stochastic. Discrete Dynamics in Nature and Society sine-Gordon lattice systems (1), which attracts the random tempered bounded sets in pullback sense.

Mathematical Settings
Upper Semicontinuity of Random Attractors
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