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Production of photons in anisotropic spacetimes

K -H Lotze

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Under the main aspect of the creation of photon pairs from vacuum the author investigates Maxwell's equations in anisotropic universes with a diagonal Bianchi type I metric. Thereby he employs a method developed earlier by Sagnotti and Zwiebach (1981). For two axisymmetric expansion laws he obtains exact photon solutions of the Maxwell equations making use of a WKB particle concept. He computes the number densities of created photons and emphasizes the importance of singularity avoidance for getting finite results. In the case of weak anisotropies the results by Zel'dovich and Starobinsky (1977) are regained and commented on.


PACS

03.50.De Classical electromagnetism, Maxwell equations

04.20.Jb Exact solutions

04.40.-b Self-gravitating systems; continuous media and classical fields in curved spacetime

MSC

83C45 Quantization of the gravitational field

83C15 Exact solutions

Subjects

Gravitation and cosmology

Particle physics and field theory

Dates

Issue 11 (November 1990)



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