Chaudhuri, Jyotipratim Ray ; Deb, Bimalendu ; Gangopadhyay, Gautam ; Ray, Deb Shankar (1998) Quantum theory of dissipation of a harmonic oscillator coupled to a non-equilibrium bath; Wigner-Weisskopf decay and physical spectra Journal of Physics B: Atomic, Molecular and Optical Physics, 31 (17). pp. 3859-3874. ISSN 0953-4075
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Official URL: http://iopscience.iop.org/0953-4075/31/17/011
Related URL: http://dx.doi.org/10.1088/0953-4075/31/17/011
Abstract
We extend the quantum theory of dissipation in the context of a system-reservoir model, where the reservoir in question is kept in a non-equilibrium condition. Based on a systematic separation of time scales involved in the dynamics, appropriate generalizations of the fluctuation-dissipation and Einstein's relations have been pointed out. We show that the Wigner-Weisskopf decay of the system mode results in a rate constant which, depending on the relaxation of a non-equilibrium bath, is dynamically modified. We also calculate the time-dependent spectra of a cavity mode with a suitable gain when the cavity is kept in contact with a non-equilibrium bath.
Item Type: | Article |
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Source: | Copyright of this article belongs to Institute of Physics. |
ID Code: | 59100 |
Deposited On: | 03 Sep 2011 11:58 |
Last Modified: | 18 May 2016 09:47 |
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