Competing Glauber and Kawasaki Dynamics

Using a quantum formulation of the master equation we study a kinetic Ising model with competing stochastic processes: the Glauber dynamics with probability p and the Kawasaki dynamics with probability 1-p. Introducing explicitly the coupling to a heat bath and the mutual static interaction of the s...

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Bibliographic Details
Published inInternational journal of modern physics. B, Condensed matter physics, statistical physics, applied physics Vol. 12; no. 23; pp. 2385 - 2392
Main Authors Artz, Simone, Trimper, Steffen
Format Journal Article
LanguageEnglish
Published World Scientific Publishing Company 20.09.1998
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ISSN0217-9792
1793-6578
DOI10.1142/S0217979298001393

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Summary:Using a quantum formulation of the master equation we study a kinetic Ising model with competing stochastic processes: the Glauber dynamics with probability p and the Kawasaki dynamics with probability 1-p. Introducing explicitly the coupling to a heat bath and the mutual static interaction of the spins the model can be traced back exactly to a Ginzburg–Landau functional when the interaction is of long range order. The dependence of the correlation length on the temperature and on the probability p is calculated. In case that the spins are subject to flip processes the correlation length disappears for each finite temperature. In the exchange dominated case the system is strongly correlated for each temperature.
ISSN:0217-9792
1793-6578
DOI:10.1142/S0217979298001393