Phase space dynamics of overdamped quantum systems
Statistical Mechanics
2009-11-07 v1 Soft Condensed Matter
Abstract
The phase space dynamics of dissipative quantum systems in strongly condensed phase is considered. Based on the exact path integral approach it is shown that the Wigner transform of the reduced density matrix obeys a time evolution equation of Fokker-Planck type valid from high down to very low temperatures. The effect of quantum fluctuations is discussed and the accuracy of these findings is tested against exact data for a harmonic system.
Cite
@article{arxiv.cond-mat/0211367,
title = {Phase space dynamics of overdamped quantum systems},
author = {Joachim Ankerhold},
journal= {arXiv preprint arXiv:cond-mat/0211367},
year = {2009}
}
Comments
7 pages, 2 figures, to appear in Euro. Phys. Lett