Transitions from low-density state towards high-density state in stochastic bistable plasma-condensate systems

TL;DR

This paper investigates how stochastic effects and electric field oscillations influence transitions between low and high-density states in bistable plasma-condensate systems, revealing noise-induced acceleration and synchronization phenomena.

Contribution

It introduces a generalized model incorporating electric field fluctuations and analyzes noise effects on transition dynamics in plasma-condensate systems.

Findings

Mean passage time can be optimized by adjusting the frequency of periodic driving.

Weak fluctuations lead to non-adiabatic effects on transition times.

Noise induces synchronization and accelerates transition processes.

Abstract

In this article we study transitions from low-density states towards high-density states in bistable plasma-condensate systems. We take into account an anisotropy in transference of adatoms between neighbour layers induced by the electric field near substrate. We derive the generalized one-layer model by assuming that the strength of the electric field is subjected to both periodic oscillations and multiplicative fluctuations. By studying the homogeneous system we discuss the corresponding mean passage time. In the limit of weak fluctuations, we show the optimization of the mean passage time with variation in the frequency of periodic driving in the non-adiabatic limit. Noise induced effects corresponding to asynchronization and acceleration in the transition dynamics are studied in detail.