Effective potential for dissipative quantum systems
统计力学
2007-05-23 v1
摘要
We consider quantum nonlinear systems with dissipation described within the Caldeira-Leggett model, i.e., by a nonlocal action in the path integral for the density matrix. Approximate classical-like formulas are derived in order to evaluate thermal averages of observables: the cases of linear and nonlinear dissipation are considered, and the framework is extended to the case of many degrees of freedom.
引用
@article{arxiv.cond-mat/9811357,
title = {Effective potential for dissipative quantum systems},
author = {A. Cuccoli and A. Fubini and A. Rossi and V. Tognetti and R. Vaia},
journal= {arXiv preprint arXiv:cond-mat/9811357},
year = {2007}
}
备注
4 pages, 4 postscript figures (embedded by psfig)