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Invariant measures and large deviation principles for stochastic Schrödinger delay lattice systems

Published online by Cambridge University Press:  04 March 2024

Zhang Chen
Affiliation:
School of Mathematics, Shandong University, Jinan 250100, People's Republic of China (zchen@sdu.edu.cn, xsun@mail.sdu.edu.cn)
Xiaoxiao Sun
Affiliation:
School of Mathematics, Shandong University, Jinan 250100, People's Republic of China (zchen@sdu.edu.cn, xsun@mail.sdu.edu.cn)
Bixiang Wang
Affiliation:
Department of Mathematics, New Mexico Institute of Mining and Technology, Socorro 87801, NM, USA (bwang@nmt.edu)

Abstract

This paper is concerned with stochastic Schrödinger delay lattice systems with both locally Lipschitz drift and diffusion terms. Based on the uniform estimates and the equicontinuity of the segment of the solution in probability, we show the tightness of a family of probability distributions of the solution and its segment process, and hence the existence of invariant measures on $l^2\times L^2((-\rho,\,0);l^2)$ with $\rho >0$. We also establish a large deviation principle for the solutions with small noise by the weak convergence method.

Type
Research Article
Copyright
Copyright © The Author(s), 2024. Published by Cambridge University Press on behalf of The Royal Society of Edinburgh

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