Critical Property of the Geometric Phase in the Dicke Model with the Dipole-dipole Interactions

被引：0
|
作者：
Yunfeng WU Ping ZHANG Jianzhou ZHENG College of science
机构：
来源：
Journal of Materials Science & Technology | 2008年 / 06期
关键词：
Geometric phases; Quantum phase transition; Dipole-dipole interactions;
D O I：
暂无
中图分类号：
TG111.3 [金属热力学];
学科分类号：
0702 ; 070205 ;
摘要：
We obtained the ground-state energy level and associated geometric phase in the Dicke model with the dipole- dipole interactions analytically by the Holstein-Primakoff transformation and the boson expansion approach in the thermodynamic limit.The nonadiabatic geometric phase induced by the photon field was derived with the time-dependent unitary transformation.It is shown that dipole-dipole interactions have a deep influence on scaled behavior of the geometric phase at the critical point.
引用
收藏
页码：960 / 962
页数：3
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