Quantum dissipative dynamics of a bistable system in the sub-Ohmic to super-Ohmic regime

Luca Magazzu', Bernardo Spagnolo, Angelo Carollo, Davide Valenti, Luca Magazzú, Bernardo Spagnolo

Risultato della ricerca: Articlepeer review

19 Citazioni (Scopus)

Abstract

We investigate the quantum dynamics of a multilevel bistable system coupled to a bosonic heat bath beyond the perturbative regime. We consider different spectral densities of the bath, in the transition from sub-Ohmic to super-Ohmic dissipation, and different cutoff frequencies. The study is carried out by using the real-time path integral approach of the Feynman-Vernon influence functional. We find that, in the crossover dynamical regime characterized by damped intrawell oscillations and incoherent tunneling, the short time behavior and the time scales of the relaxation starting from a nonequilibrium initial condition depend nontrivially on the spectral properties of the heat bath.
Lingua originaleEnglish
pagine (da-a)1-18
Numero di pagine18
RivistaJournal of Statistical Mechanics: Theory and Experiment
Volume2016
Stato di pubblicazionePublished - 2016

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Statistics, Probability and Uncertainty

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