New approach for solving master equations of density operator for the   Jaynes Cummings Model with Cavity Damping
  By introducing thermal entangled state representation which can map master equations of density operator in quantum statistics as state vector evolution equations and using dissipative interaction picture we solve the master equation of J-C model with cavity damping. In addition we derive the Wigner function for density operator when the atom is initially in the up state and the cavity mode is in coherent state. 
Seyed Mahmoud Ashrafi and Mohammad Reza Bazrafkan
quant-ph