Decoherence in the Starobinsky model

Starobinsky described an inflationary scenario in which quantum corrections to vacuum Einstein equations drive the inflation. The quantum cosmology of the model is studied by solving the Wheeler-DeWitt equation. A connection between uncertainty requirement, randomness in initial states and curvature fluctuation is studied with a Schrodinger-type equation through a time par ameter prescription. The result obtained is applied to understand the decoh erence mechanism in quantum gravity in the Starobinsky description.