Entropy, chaos, and excited-state quantum phase transitions in the Dicke model

被引：42

作者：

Lobez, C. M. ^{[1
]}

Relano, A.

机构：

[1] Univ Complutense Madrid, Dept Fis Aplicada 1, Ave Complutense S-N, E-28040 Madrid, Spain

来源：

PHYSICAL REVIEW E | 2016年 / 94卷 / 01期

关键词：

DYNAMICS; SYSTEMS;

D O I：

10.1103/PhysRevE.94.012140

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 nonequilibrium processes in an isolated quantum system-the Dicke model-focusing on the role played by the transition from integrability to chaos and the presence of excited-state quantum phase transitions. We show that both diagonal and entanglement entropies are abruptly increased by the onset of chaos. Also, this increase ends in both cases just after the system crosses the critical energy of the excited-state quantum phase transition. The link between entropy production, the development of chaos, and the excited-state quantum phase transition is more clear for the entanglement entropy.

引用

页数：10

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