Backreaction Effects of Dissipation in Neutrino Decoupling |
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| Authors: | Roy Maartens Josep Triginer |
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| Institution: | (1) School of Computer Science and Mathematics, Portsmouth University, Portsmouth, PO1 2EG, England;(2) Department of Physics, Autonomous University of Barcelona, 08193 Bellaterra, Spain |
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| Abstract: | Dissipative effects during neutrino decoupling in the early universe create a small backreaction on the Hubble rate, and lead to a small rise in temperature and entropy. We use a simplified thermo-hydrodynamic model, which provides a causal approximation to kinetic theory, in order to estimate the backreaction effects and the entropy production. |
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| Keywords: | Relativistic thermodynamics cosmology |
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