Spectrum of Particles Created in Inhomogeneous Spacetimes
arXiv:hep-th/0408034 · doi:10.1016/0370-2693(90)90332-Z
Abstract
It is proved that the spectrum of scalar particles generated from the initial vacuum in inhomogeneous spacetime is nearly thermal in the limit of large momentum , if the momentum was defined as the variable of the Fourier transform of the coordinate in the scalar field.