dorsal/arxiv
View SchemaQuantum theory of dissipation of a harmonic oscillator coupled to a nonequilibrium bath; Wigner-Weisskopf decay and physical spectra
| Authors | Jyotipratim Ray Chaudhuri, Bimalendu Deb, Gautam Gangopadhyay Deb Shankar Ray |
|---|---|
| Categories | |
| ArXiv ID | physics/9902037 |
| URL | https://arxiv.org/abs/physics/9902037 |
| DOI | 10.1088/0953-4075/31/17/011 |
| Journal | Journal of Physics B, vol.31, page 3859 (1998) |
Abstract
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.
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"abstract": "We extend the quantum theory of dissipation in the context of\nsystem-reservoir model, where the reservoir in question is kept in a\nnonequilibrium condition. Based on a systematic separation of time scales\ninvolved in the dynamics, appropriate generalizations of the\nfluctuation-dissipation and Einstein\u0027s relations have been pointed out. We show\nthat the Wigner-Weisskopf decay of the system mode results in a rate constant\nwhich depending on the relaxation of nonequilibrium bath is dynamically\nmodified. We also calculate the time-dependent spectra of a cavity mode with a\nsuitable gain when the cavity is kept in contact with a nonequilibrium bath.",
"arxiv_id": "physics/9902037",
"authors": [
"Jyotipratim Ray Chaudhuri",
"Bimalendu Deb",
"Gautam Gangopadhyay Deb Shankar Ray"
],
"categories": [
"physics.optics",
"cond-mat.stat-mech",
"quant-ph"
],
"doi": "10.1088/0953-4075/31/17/011",
"journal_ref": "Journal of Physics B, vol.31, page 3859 (1998)",
"title": "Quantum theory of dissipation of a harmonic oscillator coupled to a nonequilibrium bath; Wigner-Weisskopf decay and physical spectra",
"url": "https://arxiv.org/abs/physics/9902037"
},
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