DYNAMICAL PHASE-DIAGRAM OF THE VANHEMMEN MODEL OF SPIN-GLASS

被引:9
|
作者
TAMARIT, FA
CURADO, EMF
机构
[1] Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro
来源
关键词
D O I
10.1088/0305-4470/27/3/013
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The dynamical behaviour of the van Hemmen model of spin glass is studied by comparing the time evolution of two configurations subjected to the same thermal noise. It was found that the system undergoes several dynamical phase transitions among the paramagnetic, ferromagnetic, spin-glass and mixed phases. The dynamical phase diagram seems to be in good agreement with the static one. In the spin glass phase, the system presents a quite different dynamical behaviour from that found in short-range spin glass models as well as in the Sherrington-Kirkpatrick model.
引用
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页码:671 / 681
页数:11
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