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
收藏
页码：2424 / 2428
页数：5
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