Particle Creation in Isotropic Cosmologies
Abstract
The simplest covariant generalization of the scalar wave equation leads to significant pion creation and annihilation processes near an isotropic Friedmann-type singularity (such processes are negligible for particles of nonzero spin). Estimates for a plausible initial state yield pion creation of the same order of magnitude as obtained by Zeldovich near an anisotropic Kasner-type singularity.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 1972
- DOI:
- 10.1103/PhysRevLett.28.705
- Bibcode:
- 1972PhRvL..28..705P