# Memory and irreversibility on two-dimensional overdamped Brownian dynamics

## TL;DR

This paper investigates how memory effects influence the steady-state behavior, heat flux, and entropy production in a two-dimensional overdamped Brownian system with various stochastic forces, revealing non-Markovian impacts on thermodynamic quantities.

## Contribution

It introduces a detailed analysis of memory effects on non-equilibrium steady states in overdamped Langevin dynamics with colored noise and different temperatures.

## Key findings

- Memory reduces heat exchange with spring force parameter.
- Entropy production decreases with increasing memory time-scale.
- Non-Markovian effects alter the linear dependence seen in white noise models.

## Abstract

We consider the effects of memory on the stationary behavior of a two-dimensional Langevin dynamics in a confining potential. The system is treated in an overdamped approximation and the degrees of freedom are under the influence of distinct kinds of stochastic forces, described by Gaussian white and colored noises, as well as different effective temperatures. The joint distribution function is calculated by time-averaging approaches, and the long-term behavior is analyzed. We determine the influence of noise temporal correlations on the steady-state behavior of heat flux and entropy production. Non-Markovian effects lead to a decaying heat exchange with spring force parameter, which is in contrast to the usual linear dependence when only Gaussian white noises are presented in overdamped treatments. Also, the model exhibits non-equilibrium states characterized by a decreasing entropy production with memory time-scale.