Information geometry and quantum phase transitions in the Dicke model

被引：38

作者：

Dey, Anshuman ^{[1
]}

Mahapatra, Subhash ^{[1
]}

Roy, Pratim ^{[1
]}

Sarkar, Tapobrata ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

来源：

PHYSICAL REVIEW E | 2012年 / 86卷 / 03期

关键词：

D O I：

10.1103/PhysRevE.86.031137

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We study information geometry of the Dicke model, in the thermodynamic limit. The scalar curvature R of the Riemannian metric tensor induced on the parameter space of the model is calculated. We analyze this both with and without the rotating wave approximation, and show that the parameter manifold is smooth even at the phase transition, and that the scalar curvature is continuous across the phase boundary.

引用

页数：6

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