RANDOMNESS-INDUCED 2ND-ORDER TRANSITION IN THE 2-DIMENSIONAL 8-STATE POTTS-MODEL - A MONTE-CARLO STUDY

被引:101
作者
CHEN, S [1 ]
FERRENBERG, AM [1 ]
LANDAU, DP [1 ]
机构
[1] UNIV GEORGIA,DEPT PHYS & ASTRON,ATHENS,GA 30602
关键词
D O I
10.1103/PhysRevLett.69.1213
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have studied the effect of quenched, bond randomness on the nature of the phase transition in the two-dimensional eight-state Potts model. Through extensive Monte Carlo simulations, we confirm that the phase transition changes from first order to second order. A finite-size-scaling analysis of several thermodynamic quantities strongly suggests that the critical exponents fall into the universality class of the two-dimensional Ising model.
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页码:1213 / 1215
页数:3
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