Effects of dissipation on disordered quantum spin models
Disordered Systems and Neural Networks
2009-11-10 v1 Statistical Mechanics
Abstract
We study the effects of the coupling to an Ohmic quantum reservoir on the static and dynamical properties of a family of disordered SU(2) spin models in a transverse magnetic field using a method of direct spin summation. The tendency to form a glassy phase increases with the strength of the coupling of the system to the environment. We study the influence of the environment on the features of the phase diagram of the various models as well as the stability of the possible phases.
Cite
@article{arxiv.cond-mat/0312064,
title = {Effects of dissipation on disordered quantum spin models},
author = {L. F. Cugliandolo and D. R. Grempel and G. Lozano and H. Lozza},
journal= {arXiv preprint arXiv:cond-mat/0312064},
year = {2009}
}
Comments
24 pages, 8 figs