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Geometric Bremsstrahlung in the Early Universe

T. Futamase·M. Hotta·H. Inoue·M. Yamaguchi
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Abstract

We discuss photon emission from particles decelerlated by the cosmic expansion. This can be interpretated as a kind of bremsstrahlung induced by the Universe geometry. In the high momentum limit its transition probability does not depend on detailed behavior of the expansion.

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T. Futamase, M. Hotta, H. Inoue, M. Yamaguchi. 1996-06-12. Geometric Bremsstrahlung in the Early Universe. https://doi.org/10.1143/ptp.96.113

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