QUANTUM CHOAS AND ROTATIONAL DAMPING

被引：59

作者：

ABERG, S

机构：

[1] Department of Mathematical Physics, Lund Institute of Technology, S-221 00 Lund

来源：

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS | 1992年 / 28卷

关键词：

QUANTUM CHAOS; HIGH SPIN; SUPERDEFORMATION; ROTATIONAL DAMPING; MOTIONAL NARROWING; GAMMA-GAMMA-CORRELATIONS; GOE-ANALYSES; TRANSITION ENTROPY;

D O I：

10.1016/0146-6410(92)90012-Q

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：

The appearence of quantum chaos in the excited rapidly rotating nucleus is studied in a simple nuclear model, consisting of the cranked Nilsson model with a schematic two-body interaction added. Chaos is found to smoothly set in at a much lower excitation energy in normal-deformed Yb-168 than in superdeformed Dy152. A dynamical sign of chaos is a saturation of the standard deviation of the E2-strength function, and also the disapearence of correlations in gamma-gamma-correlations. Motional narrowing may however restore the correlations also for the completely chaotic case. The distribution of E2-matrix elements strongly deviate from Porter-Thomas result, and many more strong gamma-transitions appear than expected from GOE-theory. Transition entropy is introduced as a measure of order in the E2 cascade.

引用

页码：11 / 47

页数：37

共 34 条

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