Effects of quantum entanglement in phase transitions

被引：1

作者：

Brody, Dorje C. ^{[1
]}

Hughston, Lane P. ^{[1
]}

Parry, Matthew F. ^{[2
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Math, London SW7 2AZ, England

[2] Ctr Math Sci, Stat Lab, Cambridge CB3 0WB, England

来源：

PHYSICS LETTERS A | 2010年 / 374卷 / 24期

关键词：

MECHANICS; ENSEMBLE; STATES;

D O I：

10.1016/j.physleta.2010.03.060

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Starting with the canonical ensemble over the space of pure quantum states, we obtain an integral representation for the associated partition function. This is used to calculate the magnetisation of a system of N spin-1/2 particles. The results suggest the existence of a first order phase transition that occurs at zero temperature in the absence of spin-spin interactions. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2424 / 2428

页数：5

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