Particle Production of Coherently Oscillating Nonclassical Inflaton in   FRW Universe
  We study particle production of coherently oscillating inflaton in the semiclassical theory of gravity by representing inflaton in coherent and squeezed state formalisms. A comparative study of the inflaton in classical gravity with coherent state inflaton in semiclassical gravity is also presented. 
K. K. Venkataratnam and P. K. Suresh