Oscillatory dynamics and non-markovian memory in dissipative quantum systems

TL;DR

This paper investigates the complex nonequilibrium behavior of small quantum systems interacting with environments, highlighting unique oscillatory dynamics and the significant impact of non-markovian memory effects after quantum quenches.

Contribution

It reveals that quantum oscillatory dynamics near a transition differ from classical models and emphasizes the importance of non-markovian memory in quantum evolution.

Findings

Oscillatory dynamics differ from classical damped oscillators near transition.

Non-markovian memory significantly influences post-quench evolution.

Quantum systems exhibit unique nonequilibrium behaviors.

Abstract

The nonequilibrium dynamics of a small quantum system coupled to a dissipative environment is studied. We show that (1) the oscillatory dynamics close to a coherent-to-incoherent transition is surprisingly different from the one of the classical damped harmonic oscillator and that (2) non-markovian memory plays a prominent role in the time evolution after a quantum quench.