Fidelity susceptibility approach to quantum phase transitions in the $\mathit{XY}$ spin chain with multisite interactions

Fidelity susceptibility approach to quantum phase transitions in the $XY$ spin chain with multisite interactions

W. W. Cheng and J.-M. Liu

Phys. Rev. A 82, 012308 – Published 12 July 2010

Abstract

We study the quantum critical behavior of the $XY$ spin chain with multisite interaction by means of a fidelity susceptibility (FS) calculation. The key ingredients (e.g., finite-size scaling behavior, universality principle) of the quantum criticality near the critical point are investigated carefully. The results show that the FS calculation is reliable to characterize the quantum critical behavior and that the multisite interaction can induce the redistribution of the criticality region.

Received 7 December 2009

DOI:https://doi.org/10.1103/PhysRevA.82.012308

Authors & Affiliations

W. W. Cheng

National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China Department of Physics, Hubei Normal University, Huangshi 435002, China

J.-M. Liu^*

National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China School of Physics, South China Normal University, Guangzhou 510006, China International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China

^*liujm@nju.edu.cn

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Vol. 82, Iss. 1 — July 2010

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Physical Review A

covering atomic, molecular, and optical physics and quantum information

Fidelity susceptibility approach to quantum phase transitions in the $XY$ spin chain with multisite interactions

W. W. Cheng and J.-M. Liu

Phys. Rev. A 82, 012308 – Published 12 July 2010

Abstract

Authors & Affiliations

Article Text (Subscription Required)

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Physical Review A

covering atomic, molecular, and optical physics and quantum information

Fidelity susceptibility approach to quantum phase transitions in the XY spin chain with multisite interactions

W. W. Cheng and J.-M. Liu

Phys. Rev. A 82, 012308 – Published 12 July 2010

Abstract

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Fidelity susceptibility approach to quantum phase transitions in the $XY$ spin chain with multisite interactions