Non-Markovian dynamics of fully coupled fermionic and bosonic oscillators

V. V. Sargsyan, D. Lacroix, G. G. Adamian, N. V. Antonenko

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The non-Markovian Langevin approach is applied to study the dynamics of fermionic (bosonic) oscillator linearly coupled to a fermionic (bosonic) environment. The analytical expressions for occupation numbers in two different types of couplings (rotating-wave approximation and fully coupled) are compared and discussed. The weak-coupling and high- and low-temperature limits are considered as well. The conditions under which the environment imposes its thermal equilibrium on the collective subsystem are discussed. The sameness of the results, obtained with both the Langevin approach and the discretized environment method are shown. Short- and long-time nonequilibrium dynamics of fermionic and bosonic open quantum systems are analyzed both analytically and numerically.

Original languageEnglish
Article number032119
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number3
Publication statusPublished - 17 Mar 2017

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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