Studies of phase transitions and quantum chaos relationships in extended Casten triangle of IBM-1

被引：2
|
作者：
Proskurins, J. [1 ]
Andrejevs, A. [1 ]
Krasta, T. [1 ]
Tambergs, J. [1 ]
机构：
[1] Latvian State Univ, Inst Solid State Phys, LV-1063 Riga, Latvia
来源：
PHYSICS OF ATOMIC NUCLEI | 2006年 / 69卷 / 07期
关键词：
D O I：
10.1134/S1063778806070246
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A precise solution of the classical energy functional E(N,eta,chi;beta) minimum problem with respect to deformation parameter beta is obtained for the simplified Casten version of the standard interacting boson model (IBM-1) Hamiltonian. The first-order phase transition lines as well as the critical points of X(5), (X) over bar (5), and E(5) symmetries are considered. The dynamical criteria of quantum chaos-the basis state fragmentation width and the wave function entropy-are studied for the (eta,chi) parameter space of the extended Casten triangle, and the possible relationships between these criteria and phase transition lines are discussed.
引用
收藏
页码：1248 / 1253
页数：6
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