Decaying into the thermal medium in the early Universe

Details Decaying into the thermal medium in the early Universe Decaying into the thermal medium in the early Universe

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..805...82y&link_type=abstract

PARTICLES, STRINGS, AND COSMOLOGY: 11th International Symposium on Particles, Strings, and Cosmology; PASCOS 2005. AIP Conferen

Mathematics

Logic

Particle-Theory And Field-Theory Models Of The Early Universe, Finite-Temperature Field Theory

Scientific paper

We calculate the dissipation rate of a coherent scalar field oscillation in a thermal environment such as in the late reheating stage after inflation using nonequilibrium quantum field theory. It is shown that the dissipation rate is nonvanishing even when the decay products have a larger thermal mass than the oscillating scalar field, and its cosmological implications are discussed.

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