Quantum resonant activation

Bernardo Spagnolo, Davide Valenti, Peter Hänggi, Luca Magazzù, Bernardo Spagnolo

Risultato della ricerca: Articlepeer review

12 Citazioni (Scopus)

Abstract

Quantum resonant activation is investigated for the archetype setup of an externally driven two-state (spin-boson) system subjected to strong dissipation by means of both analytical and extensive numerical calculations. The phenomenon of resonant activation emerges in the presence of either randomly fluctuating or deterministic periodically varying driving fields. Addressing the incoherent regime, a characteristic minimum emerges in the mean first passage time to reach an absorbing neighboring state whenever the intrinsic time scale of the modulation matches the characteristic time scale of the system dynamics. For the case of deterministic periodic driving, the first passage time probability density function (pdf) displays a complex, multipeaked behavior, which depends crucially on the details of initial phase, frequency, and strength of the driving. As an interesting feature we find that the mean first passage time enters the resonant activation regime at a critical frequency ν∗ which depends very weakly on the strength of the driving. Moreover, we provide the relation between the first passage time pdf and the statistics of residence times.
Lingua originaleEnglish
pagine (da-a)042104-1-042104-13
Numero di pagine13
RivistaPHYSICAL REVIEW. E
Volume95
Stato di pubblicazionePublished - 2017

All Science Journal Classification (ASJC) codes

  • ???subjectarea.asjc.3100.3109???
  • ???subjectarea.asjc.2600.2613???
  • ???subjectarea.asjc.3100.3104???

Fingerprint

Entra nei temi di ricerca di 'Quantum resonant activation'. Insieme formano una fingerprint unica.

Cita questo