Dynamics of Ising models coupled microscopically to bath systems

Details Dynamics of Ising models coupled microscopically to bath systems Dynamics of Ising models coupled microscopically to bath systems

2003-08-08

arxiv.org/abs/cond-mat/0308172v1

Physics

Condensed Matter

Statistical Mechanics

7 pages, no figures

Scientific paper

Based on the Robertson theory the nonlinear dynamics of general Ising systems coupled microscopically to bath systems is investigated leading to two complimentary approaches. Within the master equation approach microscopically founded transition rates are presented which essentially differ from the usual phenological rates. The second approach leads to coupled equations of motion for the local magnetizations and the exchange energy. Simple examples are discussed and the general results are applied to the Sherrington-Kirkpatrick spin glass model.

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