Physics – Optics
Scientific paper
1999-02-15
Journal of Physics B, vol.31, page 3859 (1998)
Physics
Optics
Plain Latex, 28 pages, 2 PS figures
Scientific paper
10.1088/0953-4075/31/17/011
We extend the quantum theory of dissipation in the context of system-reservoir model, where the reservoir in question is kept in a nonequilibrium 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 nonequilibrium 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 nonequilibrium bath.
Chaudhuri Jyotipratim Ray
Deb Bimalendu
Shankar Ray Gautam Gangopadhyay Deb
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