CLASSICAL AND QUANTUM PHASE-SPACE BEHAVIOR OF A SPIN-BOSON SYSTEM

被引：45
|
作者：
MULLER, L
STOLZE, J
LESCHKE, H
NAGEL, P
机构：
[1] UNIV DORTMUND, INST PHYS, W-4600 DORTMUND 50, GERMANY
[2] UNIV ERLANGEN NURNBERG, INST THEORET PHYS, W-8520 ERLANGEN, GERMANY
来源：
PHYSICAL REVIEW A | 1991年 / 44卷 / 02期
关键词：
D O I：
10.1103/PhysRevA.44.1022
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study the phase-space behavior of the standard two-level system (spin 1/2) coupled to a harmonic oscillator (without the rotating-wave approximation), the classical counterpart of which is known to display deterministic chaos. We study the quantum-mechanical phase-space behavior by means of harmonic-oscillator coherent states (Husimi representation). Stationary quantum Poincare sections may be defined; they show many parallels to their classical counterparts. We also study the time development of initially coherent states and observe a tendency towards a decay into many small wave packets in phase space for parameters in the chaotic regime.
引用
收藏
页码：1022 / 1033
页数：12
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