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.
| Original language | English |
|---|---|
| Article number | 032119 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 95 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 17 Mar 2017 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
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Non-Markovian dynamics of fully coupled fermionic and bosonic oscillators. / Sargsyan, V. V.; Lacroix, D.; Adamian, G. G.; Antonenko, N. V.
In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 95, No. 3, 032119, 17.03.2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Non-Markovian dynamics of fully coupled fermionic and bosonic oscillators
AU - Sargsyan, V. V.
AU - Lacroix, D.
AU - Adamian, G. G.
AU - Antonenko, N. V.
PY - 2017/3/17
Y1 - 2017/3/17
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevA.95.032119
DO - 10.1103/PhysRevA.95.032119
M3 - Article
VL - 95
JO - Physical Review A
JF - Physical Review A
SN - 1050-2947
IS - 3
M1 - 032119
ER -