Cosmological Constraints On Late-Time Entropy Production

PHYSICAL REVIEW LETTERS, no. 21 (1999): 4168-4171

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boltzmann equationentropy productioncosmic microwave backgroundbig bang nucleosynthesis

Abstract

We investigate cosmological effects concerning the late-time entropy production due to the decay of nonrelativistic massive particles. The thermalization process of neutrinos after the entropy production is properly solved by using the Boltzmann equation. If a large entropy production takes place at late time t similar or equal to 1 sec, ...More

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M. Kawasaki

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K. Kohri

Naoshi Sugiyama

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