Effects of dissipation on disordered quantum spin models

Details Effects of dissipation on disordered quantum spin models Effects of dissipation on disordered quantum spin models

2003-12-02

arxiv.org/abs/cond-mat/0312064v1

Phys. Rev. B 70, 024422 (2004).

Physics

Condensed Matter

Disordered Systems and Neural Networks

24 pages, 8 figs

Scientific paper

10.1103/PhysRevB.70.024422

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.

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