Long-term behaviour of asymptotically autonomous Hamiltonian systems with multiplicative noise
Abstract
The influence of multiplicative stochastic perturbations on the class of asymptotically Hamiltonian systems on the plane is investigated. It is assumed that disturbances do not preserve the equilibrium of the corresponding limiting system and their intensity decays in time with power-law asymptotics. The paper discusses the long-term asymptotic behaviour of solutions and its dependence on the structure and parameters of perturbations. In particular, it is shown that perturbed trajectories can tend to the equilibrium of the limiting system or new stochastically stable states can arise. The proposed analysis is based on a combination of the averaging method and the construction of stochastic Lyapunov functions. The results obtained are applied to the problem of capture into parametric autoresonance in the presence of noise.
Keywords
Cite
@article{arxiv.2202.07973,
title = {Long-term behaviour of asymptotically autonomous Hamiltonian systems with multiplicative noise},
author = {O. A. Sultanov},
journal= {arXiv preprint arXiv:2202.07973},
year = {2023}
}
Comments
27 pages, 9 figures. Fixed typos and some bugs. arXiv admin note: text overlap with arXiv:2112.00548