Evolution of order and chaos across a first-order quantum phase transition

被引：18

作者：

Leviatan, A. ^{[1
]}

Macek, M. ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

来源：

PHYSICS LETTERS B | 2012年 / 714卷 / 01期

基金：

以色列科学基金会;

关键词：

Regularity and chaos; Quantum shape-phase transitions; Interacting boson model (IBM); INTERACTING-BOSON MODEL; CLASSICAL LIMIT;

D O I：

10.1016/j.physletb.2012.06.046

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the evolution of the dynamics across a generic first-order quantum phase transition in an interacting boson model of nuclei. The dynamics inside the phase coexistence region exhibits a very simple pattern. A classical analysis reveals a robustly regular dynamics confined to the deformed region and well separated from a chaotic dynamics ascribed to the spherical region. A quantum analysis discloses regular bands of states in the deformed region, which persist to energies well above the phase-separating barrier, in the face of a complicated environment. The impact of kinetic collective rotational terms on this intricate interplay of order and chaos is investigated. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：110 / 114

页数：5

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