| Numéro |
J. Phys. I France
Volume 1, Numéro 8, August 1991
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|
|---|---|---|
| Page(s) | 1087 - 1091 | |
| DOI | https://doi.org/10.1051/jp1:1991192 | |
J. Phys. I France 1 (1991) 1087-1091
Numerical studies of the spin-flip dynamics in the SK-model
G.A. Kohring and M. SchreckenbergInstitut für Theoretische Physik, Universität zu Köln, Zülpicherstr. 77, D-5000 Köln 41, Germany
(Received 15 May 1991, accepted 23 May 1991)
Abstract
The spin-flip dynamics of the SK-model is studied numerically with systems of up to
105 spins. For sequential dynamics at
T=0 we find a remanent magnetization of
which is about half the value found earlier for much smaller systems. Furthermore we have calculated the percentage of spins
which flip
n times during the descent into a metastable state. Remarkably, the number of spins which never flip (
n=0) is asymptotically equal to the number of spins which flip only once
(n=1). Therefore the dominant contribution to the remanent magnetization comes from the spins which flip twice
(n=2). We have found the convergence time, with the system sizes used here, to diverge faster than a simple power law.
© Les Editions de Physique 1991