Production of photons in anisotropic spacetimes

Details Production of photons in anisotropic spacetimes Production of photons in anisotropic spacetimes

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990cqgra...7.2145l&link_type=abstract

Classical and Quantum Gravity (ISSN 0264-9381), vol. 7, Nov. 1990, p. 2145-2154.

Mathematics

10

Cosmology, Photons, Space-Time Functions, Anisotropy, Maxwell Equation, Quantum Electrodynamics, Singularity (Mathematics), Universe, Wentzel-Kramer-Brillouin Method

Scientific paper

Under the main aspect of the creation of photon pairs from vacuum, Maxwell's equations in anisotropic universes with a diagonal Bianchi type I metric are investigated. For two axisymmetric expansion laws, exact photon solutions of the Maxwell equations making use of a WKB particle concept are obtained. The number densities of created photons are computed and the importance of singularity avoidance for getting finite results is emphasized. In the case of weak anisotropies the results by Zel'dovich and Starobinsky are regained and commented on.

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