Cosmological scalar-particle creation rate
Abstract
We consider the scalar-particle creation rate and its energy distribution in a spatially flat expanding universe, using the quantum equivalence principle, to make the field decomposition into its positive- and negative-frequency parts over each Cauchy surface, up to the second order of an expansion in powers of the Hubble coefficient. The particle flux is evaluated in the hot big-bang model and compared with the experimental data.
- Publication:
-
Physical Review D
- Pub Date:
- July 1981
- DOI:
- 10.1103/PhysRevD.24.290
- Bibcode:
- 1981PhRvD..24..290C