An analytically solvable time dependent Jaynes Cummings model
  Using the underlying su(2) algebra of the Jaynes-Cummings Model (JCM), we construct a time dependent interaction term that allows analytical solution for even off-resonance conditions. Exact solutions for the time evolution of any state has been found. The effect of detuning on the Rabi oscillations and the collapse and revival of inversion is indicated. It is also shown that at resonance, the time dependent JCM is analytically solvable for an arbitrary interaction term. 
Ananda Dasgupta (1) ((1) Saha Institute of Nuclear Physics, Calcutta,   India)