Particle creation in a Robertson-Walker Universe revisited
arXiv:hep-th/0701033 · doi:10.1007/s10773-007-9408-0
Abstract
We reanalyze the problem of particle creation in a 3+1 spatially closed Robertson-Walker space-time. We compute the total number of particles produced by this non-stationary gravitational background as well as the corresponding total energy and find a slight discrepancy between our results and those recently obtained in the literature