General Solution of the Quantum Damped Harmonic Oscillator II : Some   Examples
  In the preceding paper (arXiv : 0710.2724 [quant-ph]) we have constructed the general solution for the master equation of quantum damped harmonic oscillator, which is given by the complicated infinite series in the operator algebra level. In this paper we give the explicit and compact forms to solutions (density operators) for some initial values. In particular, the compact one for the initial value based on a coherent state is given, which has not been given as far as we know. Moreover, some related problems are presented. 
Kazuyuki Fujii (Yokohama City University) and Tatsuo Suzuki (Shibaura   Institute of Technology)