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论文类型： 期刊论文

发表时间： 2010-04-01

发表刊物： EUROPEAN PHYSICAL JOURNAL D

收录刊物： SCIE

卷号： 57

期号： 2

页面范围： 281-286

ISSN号： 1434-6060

摘要： We study the geometric phase of the ground state of the one-dimensional compass model in a transverse field. The critical properties of the system in terms of the geometric phase are calculated and discussed. The results show that the general character of quantum phase transitions (QPTs) in the model can be revealed by the Berry phase of the ground state. This study extends the relations between geometric phases and QPTs.