Internal and External Fluctuation Activated Non-equilibrium Reactive Rate Process

TL;DR

This paper investigates how internal and external noise fluctuations influence the activated rate process in non-equilibrium open systems, revealing that internal noise hampers diffusion while external modulation can enhance the rate.

Contribution

It introduces a unified approach to analyze internal and external noise effects on non-equilibrium reactive rate processes using reactive flux methodology.

Findings

Internal noise reduces particle diffusion efficiency.

External modulation can improve the rate constant.

The study provides a comprehensive framework for noise effects in non-equilibrium systems.

Abstract

The activated rate process for non-equilibrium open systems is studied taking into account both internal and external noise fluctuations in a unified way. The probability of a particle diffusing passing over the saddle point and the rate constant together with the effective transmission coefficient are calculated via the method of reactive flux. We find that the complexity of internal noise is always harmful to the diffusion of particles. However the external modulation may be beneficial to the rate process.