Excited-state quantum phase transitions in finite many-body systems

被引：9
作者：
Cejnar, Pavel [1 ]
Stransky, Pavel [1 ]
Kloc, Michal [1 ]
机构：
[1] Charles Univ Prague, Fac Math & Phys, Inst Particle & Nucl Phys, CR-18000 Prague, Czech Republic
来源：
PHYSICA SCRIPTA | 2015年 / 90卷 / 11期
关键词：
quantum phase transitions; semiclassical state density; level dynamics; INTERACTING-BOSON MODEL; MONODROMY; MOLECULES; DYNAMICS; NUCLEI;
D O I：
10.1088/0031-8949/90/11/114015
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Quantum spectra of excited states of numerous collective many-body models show singularities related to stable and unstable stationary points of the corresponding classical dynamics. We show several examples of these singularities and discuss some of their consequences.
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页数：7
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