Noise correlation-induced splitting of Kramers' escape rate from a metastable state

TL;DR

This paper investigates how correlated noise processes can break symmetry in a triple well potential, causing asymmetric escape rates and population localization, which influences reaction product distribution.

Contribution

It introduces the concept that noise correlation can induce symmetry breaking and rate splitting in thermally activated escape processes.

Findings

Noise correlation causes asymmetry in well populations.

Splitting of Kramers' escape rate observed due to noise correlation.

Results suggest control of reaction pathways via noise correlation.

Abstract

A correlation between two noise processes driving the thermally activated particles in a symmetric triple well potential, may cause a symmetry breaking and a difference in relative stability of the two side wells with respect to the middle one. This leads to an asymmetric localization of population and splitting of Kramers' rate of escape from the middle well, ensuring a preferential distribution of the products in the course of a parallel reaction.