| Geometric phases and quantum phase transitions in inhomogeneous XY spin-chains:Effect of the Dzyaloshinski-Moriya interaction |
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| 引用本文： | 王林成,闫俊彦,衣学喜. Geometric phases and quantum phase transitions in inhomogeneous XY spin-chains:Effect of the Dzyaloshinski-Moriya interaction[J]. 中国物理 B, 2010, 19(4): 40512-040512. DOI: 10.1088/1674-1056/19/4/040512 |
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| 作者姓名： | 王林成 闫俊彦 衣学喜 |
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| 作者单位： | School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China |
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| 基金项目： | Project supported by NationalNatural Science Foundation of China (Grant Nos.~10847108 and10775023). |
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| 摘 要： | We study geometric phases of the ground states ofinhomogeneous XY spin chains in transverse fields withDzyaloshinski--Moriya (DM) interaction, and investigate the effectof the DM interaction on the quantum phase transition (QPT) of suchspin chains. The results show that the DM interaction couldinfluence the distribution of the regions of QPTs but could notproduce new critical points for the spin-chain. This study extendsthe relation between geometric phases and QPTs.
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| 关 键 词： | geometric phase quantum phase transition the Dzyaloshinski-Moriya interaction |
| 收稿时间： | 2009-09-02 |
Geometric phases and quantum phase transitions in inhomogeneous XY spin-chains: Effect of the Dzyaloshinski－Moriya interaction |
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| Wang Lin-Cheng,Yan Jun-Yan and Yi Xue-Xi. Geometric phases and quantum phase transitions in inhomogeneous XY spin-chains: Effect of the Dzyaloshinski－Moriya interaction[J]. Chinese Physics B, 2010, 19(4): 40512-040512. DOI: 10.1088/1674-1056/19/4/040512 |
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| Authors: | Wang Lin-Cheng Yan Jun-Yan Yi Xue-Xi |
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| Affiliation: | School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | We study geometric phases of the ground states ofinhomogeneous XY spin chains in transverse fields withDzyaloshinski--Moriya (DM) interaction, and investigate the effectof the DM interaction on the quantum phase transition (QPT) of suchspin chains. The results show that the DM interaction couldinfluence the distribution of the regions of QPTs but could notproduce new critical points for the spin-chain. This study extendsthe relation between geometric phases and QPTs. |
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| Keywords: | geometric phase quantum phase transition the Dzyaloshinski--Moriya interaction |
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