Dynamics of ordering of isotropic magnets

Jayajit Das and Madan Rao

Physica A: Statistical Mechanics and its Applications, 1999, vol. 270, issue 1, 253-262

Abstract: We study the dynamics of ordering of the nonconserved and conserved Heisenberg magnet. The dynamics consists of two parts — an irreversible dissipation into a heat bath and a reversible precession induced by a torque due to the local molecular field. For quenches both to T=0 and Tc, we show that the torque is irrelevant when the dynamics is nonconserved but relevant when the dynamics is conserved and is governed by a new nontrivial fixed point.

Keywords: Heisenberg magnet; Langevin equation; Dynamical scaling; Multiscaling (search for similar items in EconPapers)
Date: 1999
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:270:y:1999:i:1:p:253-262

DOI: 10.1016/S0378-4371(99)00122-3

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