  We study the density fluctuations for Coherent Squeezed Number State (CSNS)
and Squeezed Number States (SNS) formalism in Semiclassical theory of grav ity
in flat FRW universe. We used Number state evolution of oscillatory phase of
inflaton for coherent squeezed number state and squeezed number states for
malisms. We analyzed that density fluctuations for SNS depends upon squeezing
parameter and number state while for CSNS density fluctuations depends upon
squeezing parameter, number state and coherent state parameter. These param
eters plays an important role for quantum consideration of SNS and CSNS. The
results of the analysis shows that increase in density fluctuations for both
SNS and CSNS, demonstrate quantum behavior of SCEE as well as production of
various kind of particles in these states.
