Quantum phase space distributions in thermofield dynamics
Quantum Physics
2008-11-26 v2
Abstract
It is shown that the the quantum phase space distributions corresponding to a density operator can be expressed, in thermofield dynamics, as overlaps between the state and "thermal" coherent states. The usefulness of this approach is brought out in the context of a master equation describing a nonlinear oscillator for which exact expressions for the quantum phase distributions for an arbitrary initial condition are derived.
Cite
@article{arxiv.quant-ph/9810011,
title = {Quantum phase space distributions in thermofield dynamics},
author = {S. Chaturvedi and V. Srinivasan and G. S. Agarwal},
journal= {arXiv preprint arXiv:quant-ph/9810011},
year = {2008}
}
Comments
17 pages, revtex, no figures. number of pages were incorrectly stated as 3 instead of 17. No other corrections