Accueil du site > Publications récentes > Non-Markovian dynamics of fully coupled fermionic and bosonic oscillators
V. V. Sargsyan, D. Lacroix, G. G. Adamian, and N. V. Antonenko
Abstract :
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.
Voir en ligne : Phys. Rev. A 95, 032119 (2017)
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