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Indexed by:期刊论文

Date of Publication:2010-04-01

Journal:EUROPEAN PHYSICAL JOURNAL D

Included Journals:SCIE

Volume:57

Issue:2

Page Number:281-286

ISSN No.:1434-6060

Abstract: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.