Stabilization by dissipation and stochastic resonant activation in quantum metastable systems: Noise induced phenomena in quantum metastable systems

Bernardo Spagnolo, Angelo Carollo, Davide Valenti, Angelo Carollo, Bernardo Spagnolo, Davide Valenti

Risultato della ricerca: Articlepeer review

16 Citazioni (Scopus)

Abstract

In this tutorial paper we present a comprehensive review of the escape dynamics from quantum metastable states in dissipative systems and related noise-induced effects. We analyze the role of dissipation and driving in the escape process from quantum metastable states with and without an external driving force, starting from a nonequilibrium initial condition. We use the Caldeira–Leggett model and a non-perturbative theoretical technique within the Feynman–Vernon influence functional approach in strong dissipation regime. In the absence of driving, we find that the escape time from the metastable region has a nonmonotonic behavior versus the system-bath coupling and the temperature, producing a stabilizing effect in the quantum metastable system. In the presence of an external driving, the escape time from the metastable region has a nonmonotonic behavior as a function of the frequency of the driving, the thermal-bath coupling and the temperature. The quantum noise enhanced stability phenomenon is observed in both systems investigated. Finally, we analyze the resonantly activated escape from a quantum metastable state in the spin-boson model. We find quantum stochastic resonant activation, that is the presence of a minimum in the escape time as a function of the driving frequency. Background and introductory material has been added in the first three sections of the paper to make this tutorial review reasonably self-contained and readable for graduate students and non-specialists from related areas.
Lingua originaleEnglish
pagine (da-a)379-420
Numero di pagine42
RivistaTHE EUROPEAN PHYSICAL JOURNAL. SPECIAL TOPICS
Volume227
Stato di pubblicazionePublished - 2018

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.3100.3100???
  • Physical and Theoretical Chemistry

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