A reduction scheme for coupled Brownian harmonic oscillators
Abstract
We propose a reduction scheme for a system constituted by two coupled harmonically-bound Brownian oscillators. We reduce the description by constructing a lower dimensional model which inherits some of the basic features of the original dynamics and is written in terms of suitable transport coefficients. The proposed procedure is twofold: while the deterministic component of the dynamics is obtained by a direct application of the invariant manifold method, the diffusion terms are determined via the Fluctuation-Dissipation Theorem. We highlight the behavior of the coefficients up to a critical value of the coupling parameter, which marks the endpoint of the interval in which a contracted description is available. The study of the weak coupling regime is addressed and the commutativity of alternative reduction paths is also discussed.
Cite
@article{arxiv.2209.13481,
title = {A reduction scheme for coupled Brownian harmonic oscillators},
author = {Matteo Colangeli and Manh Hong Duong and Adrian Muntean},
journal= {arXiv preprint arXiv:2209.13481},
year = {2023}
}