A boson system interacting with an external harmonic oscillator - The su(1,1)-spin like behavior in the su(2)-spin system

被引：8
|
作者：
Kuriyama, A
daProvidencia, J
Tsue, Y
Yamamura, M
机构：
[1] UNIV COIMBRA, DEPT FIS, P-3000 COIMBRA, PORTUGAL
[2] KOCHI UNIV, DEPT PHYS, KOCHI 780, JAPAN
来源：
PROGRESS OF THEORETICAL PHYSICS | 1997年 / 98卷 / 04期
关键词：
D O I：
10.1143/PTP.98.893
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In order to avoid the introduction of a fictitious degree of freedom in the su(1,1)-algebraic approach for describing thermal effects in a boson system, the su(2)-algebraic approach is proposed in terms of a boson system interacting with an external harmonic oscillator. The relation between the two approaches is investigated from two points of view. One is a quantal point of view based on the MYT boson expansion. The other is a classical point of view based on one of three forms of coherent states for the su(2)-spin system proposed recently by the present authors. Solution of Hamilton's equation of motion is discussed in relation to that in the su(1,1)-algebraic approach.
引用
收藏
页码：893 / 915
页数：23
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