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Indexed by:期刊论文

Date of Publication:2010-04-01

Journal:CHINESE PHYSICS B

Included Journals:SCIE、EI、ISTIC

Volume:19

Issue:4

ISSN No.:1674-1056

Key Words:geometric phase; quantum phase transition; the Dzyaloshinski-Moriya interaction

Abstract:We study geometric phases of the ground states of inhomogeneous XY spin chains in transverse fields with Dzyaloshinski-Moriya (DM) interaction, and investigate the effect of the DM interaction on the quantum phase transition (QPT) of such spin chains. The results show that the DM interaction could influence the distribution of the regions of QPTs but could not produce new critical points for the spin-chain. This study extends the relation between geometric phases and QPTs.