ASYMMETRIC EXCLUSION MODEL WITH 2 SPECIES - SPONTANEOUS SYMMETRY-BREAKING

被引:161
作者
EVANS, MR
FOSTER, DP
GODRECHE, C
MUKAMEL, D
机构
[1] CTR ETUD SACLAY,SERV PHYS ETAT CONDENSE,F-91191 GIF SUR YVETTE,FRANCE
[2] NEWTON INST MATH SCI,CAMBRIDGE CB2 OEH,ENGLAND
[3] WEIZMANN INST SCI,DEPT PHYS COMPLEX SYST,IL-76100 REHOVOT,ISRAEL
关键词
STOCHASTIC LATTICE GAS; EXCLUDED VOLUME; STEADY STATES; PHASE TRANSITIONS; SPONTANEOUS SYMMETRY BREAKING;
D O I
10.1007/BF02178354
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A simple two-species asymmetric exclusion model is introduced. It consists of two types of oppositely charged particles driven by an electric field and hopping on an open chain. The phase diagram of the model is calculated in the mean-field approximation and by Monte Carlo simulations. Exact solutions are given for special values of the parameters defining its dynamics. The model is found to exhibit two phases in which spontaneous symmetry breaking takes place, where the two currents of the two species are not equal.
引用
收藏
页码:69 / 102
页数:34
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