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Geometric phase and quantum phase transition in the one-dimensional compass model |
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| Authors: | L C Wang and X X Yi |
| Institution: | (1) Theoretical Physics Department, Indian Association for the Cultivation of Sciences, Jadavpur, Kolkata, 700 032, India;(2) Center for High Energy Physics, Indian Institute of Science, Bangalore, 560 012, India;(3) Theoretical Physics Department, Indian Association for the Cultivation of Sciences, Jadavpur, Kolkata, 700 032, India |
| 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. |
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