扩展 XY 自旋链中通量淬火诱导的动态量子相变

IF 2.8 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY Physica A: Statistical Mechanics and its Applications Pub Date : 2024-09-18 DOI:10.1016/j.physa.2024.130110

Wen-Hui Nie, Mei-Yu Zhang, Lin-Cheng Wang

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引用次数: 0

摘要

本文研究了在扩展的横向 XY 自旋链中由通量淬火诱发的动态量子相变（DQPTs）。我们讨论了 DQPTs 出现的条件，并给出了受横向场强限制的不同通量淬火区域。我们计算了洛希米特回波、速率函数、几何相位以及动力学拓扑阶次参数（DTOP），结果一致验证了 DQPT 的出现。

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Flux-quench induced dynamical quantum phase transitions in an extended XY spin-chain

Dynamical quantum phase transitions (DQPTs) induced by flux-quench in an extended transversed XY spin-chain have been investigated in this paper. We discussed the conditions for the appearance of DQPTs, and the different regions of the flux quench restricted by strength of transverse field were given. The Loschmidt echo, rate function, geometric phase, as well as dynamical topological order parameter (DTOP) have been calculated, which consistently verified the emergence of DQPTs.

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来源期刊

Physica A: Statistical Mechanics and its Applications 物理-物理：综合

CiteScore

7.20

自引率

9.10%

发文量

852

审稿时长

6.6 months

期刊介绍： Physica A: Statistical Mechanics and its Applications Recognized by the European Physical Society Physica A publishes research in the field of statistical mechanics and its applications. Statistical mechanics sets out to explain the behaviour of macroscopic systems by studying the statistical properties of their microscopic constituents. Applications of the techniques of statistical mechanics are widespread, and include: applications to physical systems such as solids, liquids and gases; applications to chemical and biological systems (colloids, interfaces, complex fluids, polymers and biopolymers, cell physics); and other interdisciplinary applications to for instance biological, economical and sociological systems.