Modeling the metastable dynamics of correlated structures

TL;DR

This paper investigates the metastable quantum dynamics of a frustrated triangular cluster coupled to a reservoir, revealing how bath-mediated transitions and spectrum tuning influence decay rates and metastability.

Contribution

It introduces a master equation approach with many-body transition operators to analyze metastable states in a correlated quantum cluster.

Findings

Metastability observed in excited and ground states.

Decay rates controlled by excitation spectrum tuning.

Bath-mediated transitions involve thermal activation processes.

Abstract

Metastable quantum dynamics of an asymmetric triangular cluster that is coupled to a reservoir is investigated. The dynamics is governed by bath-mediated transitions, which in part require a thermal activation process. The decay rate is controlled by tuning the excitation spectrum of the frustrated cluster. We use the master equation approach and construct transition operators in terms of many-body states. We analyze dynamics of observables and reveal metastability of an excited state and of a magnetically polarized ground state.