Yang-Lee zero analysis of a 2D Hubbard model

被引：0
|
作者：
Abraham, E. [1 ]
Barbour, I. M. [2 ]
Cullen, P. H. [1 ]
Klepfish, E. G. [3 ]
Pike, E. R. [3 ]
Sarkar, S. [3 ]
机构：
[1] Heriot Watt Univ, Dept Phys, Edinburgh EH14 4AS, Midlothian, Scotland
[2] Univ Glasgow, Dept Phys, Glasgow G12 8QQ, Lanark, Scotland
[3] Kings Coll London, Wheatstone Phys Lab, London WC2R 2LS, England
来源：
PHYSICA B-CONDENSED MATTER | 1995年 / 206卷
关键词：
D O I：
10.1016/0921-4526(94)00561-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Yang-Lee analysis of the grand canonical partition function for a Hubbard Model at finite doping is presented. Evaluating the zeros of this function in the complex chemical-potential plane, we observe an onset of a phase transition when the zeros approach the positive real half-axis with spatial increase of the simulated system. The peak of electronic susceptibility is located in the vicinity of the relevant zeros.
引用
收藏
页码：702 / 704
页数：3
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