Semiclassical spin damping: Superradiance revisited
Optics
2009-10-31 v1 Quantum Physics
Abstract
A well known description of superradiance from pointlike collections of many atoms involves the dissipative motion of a large spin. The pertinent ``superradiance master equation'' allows for a formally exact solution which we subject to a semiclassical evaluation. The clue is a saddle-point approximation for an inverse Laplace transform. All previous approximate treatments, disparate as they may appear, are encompassed in our systematic formulation. A byproduct is a hitherto unknown rigorous relation between coherences and probabilities. Our results allow for generalizations to spin dynamics with chaos in the classical limit.
Cite
@article{arxiv.physics/9803041,
title = {Semiclassical spin damping: Superradiance revisited},
author = {Petr A. Braun and Daniel Braun and Fritz Haake and Joachim Weber},
journal= {arXiv preprint arXiv:physics/9803041},
year = {2009}
}
Comments
12 pages standard revtex; to be published in EPJ D