Cosmological scalar-particle creation rate
- 15 July 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 24 (2) , 290-296
- https://doi.org/10.1103/physrevd.24.290
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.Keywords
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