%0 Journal Article
%T Effective potential approach to quantum dissipation in condensed matter systems
%A Alessandro Cuccoli
%A Andrea Fubini
%A Valerio Tognetti
%A Ruggero Vaia
%J Physics
%D 2000
%I arXiv
%X The effects of dissipation on the thermodynamic properties of nonlinear quantum systems are approached by the path-integral method in order to construct approximate classical-like formulas for evaluating thermal averages of thermodynamic quantities. Explicit calculations are presented for one-particle and many-body systems. The effects of the dissipation mechanism on the phase diagram of two-dimensional Josephson arrays is discussed.
%U http://arxiv.org/abs/cond-mat/0002072v1