Picturing quantum phase transitions

被引：1

作者：

Munoz, C. ^{[1
]}

Gaeta, M. ^{[1
]}

Gomez, R. ^{[1
]}

Klimov, A. B. ^{[1
]}

机构：

[1] Univ Guadalajara, Dept Fis, Revoluc 1500, Guadalajara 44410, Jalisco, Mexico

来源：

PHYSICS LETTERS A | 2019年 / 383卷 / 2-3期

关键词：

Quantum phase transition; Collective measurements; Phase space representation; WIGNER-FUNCTION;

D O I：

10.1016/j.physleta.2018.10.030

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We discuss the quantum phase transitions (QPT) in N-spin chains from the point of view of collective observables. We show that the measurement space representation is a convenient tool for the analysis of phase transitions, allowing the determination of an appropriate set of macroscopic order parameters (for a given Hamiltonian). Quantum correlations in the vicinity of the critical points are analyzed both in the ground states and low temperature thermal states. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：141 / 147

页数：7

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