MEAN-FIELD APPROXIMATION WITH COHERENT ANOMALY METHOD FOR A NONEQUILIBRIUM MODEL

被引:15
作者
FERREIRA, ALC
MENDIRATTA, SK
机构
[1] Dept. de Fisica, Aveiro Univ.
来源
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1993年 / 26卷 / 04期
关键词
D O I
10.1088/0305-4470/26/4/004
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A mean-field approximation for a 1D non-equilibrium lattice model, known as model A [1], is considered allowing us to compute the probability of a configuration of a given duster of sites. The mean-field equations are numerically solved in the stationary regime for different duster sizes L (less-than-or-equal-to 15). From a finite-size analysis and the application of the coherent anomaly method (CAM) [2] we compute the critical parameter of the model, the correlation length critical exponent nu(perpendicular-to) and the order parameter critical exponent beta; the results are in agreement with those obtained by other methods.
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页码:L145 / L150
页数:6
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