Pair creation in cosmology when electromagnetic fields are present
Abstract
The amount of particle pairs created in a 3-flat Robertson-Walker Universe with an expansion law for the early Universe is calculated exactly when a homogeneous electromagnetic field is present. Under some restrictions a time-dependent particle creation rate is found. Finally we show that the low-frequency part of the cosmological 2.7 K background radiation can be identified with the stationary electromagnetic field discussed before. According to this a large amount of particles of the order of the number of particles in the Universe should be created out of the vacuum in the immediate neighbourhood of the 'big bang'.
- Publication:
-
Journal of Physics A Mathematical General
- Pub Date:
- February 1980
- DOI:
- 10.1088/0305-4470/13/2/019
- Bibcode:
- 1980JPhA...13..517S
- Keywords:
-
- Background Radiation;
- Big Bang Cosmology;
- Electromagnetic Fields;
- Pair Production;
- Universe;
- Gravitational Fields;
- Particle Density (Concentration);
- Time Dependence;
- Astrophysics