2000
DOI: 10.1023/a:1001994404420
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Backreaction Effects of Dissipation in Neutrino Decoupling

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 thermohydrodynamic model, which provides a causal approximation to kinetic theory, in order to estimate the backreaction effects and the entropy production. I. INTRODUCTIONNon-equilibrium processes in the early universe are typically associated with dynamical transitions or particle decouplings. In the case of neutrino deco… Show more

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Cited by 3 publications
(5 citation statements)
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“…The above results does not change the significance and the magnitude of the finite-temperature electromagnetic corrections to the energy density of the γe + e − radiation plasma [15,20,21] or of the finite-temperature QCD corrections [22]. They are of the same order of magnitude of flavor mixing corrections upon the averaged temperature of decoupling for different neutrino species, which also depend on the mixing parameters [22].…”
Section: -P4mentioning
confidence: 58%
“…The above results does not change the significance and the magnitude of the finite-temperature electromagnetic corrections to the energy density of the γe + e − radiation plasma [15,20,21] or of the finite-temperature QCD corrections [22]. They are of the same order of magnitude of flavor mixing corrections upon the averaged temperature of decoupling for different neutrino species, which also depend on the mixing parameters [22].…”
Section: -P4mentioning
confidence: 58%
“…universe was recently proposed in ref. [142]. Though significantly less accurate, it gives a simple intuitive description and qualitatively similar results.…”
Section: Spectral Distortion Of Massless Neutrinosmentioning
confidence: 83%
“…A simplified hydrodynamic approach to non-equilibrium neutrinos in the early universe was recently proposed in ref. [142]. Though significantly less accurate, it gives a simple intuitive description and qualitatively similar results.…”
Section: Spectral Distortion Of Massless Neutrinosmentioning
confidence: 83%
“…The results depicted from Figs. 1 and 2 does not change the significance and the magnitude of the finite-temperature electromagnetic corrections to the energy density of the γe + e − radiation plasma [20,22,23] or of the finite temperature QCD corrections [1]. They are of the same order of magnitude of flavor mixing corrections upon the averaged temperature of decoupling for different neutrino species, which also depend on the mixing parameters [1].…”
Section: Appendix II -The Von-neumann Entropy and Quantum Measurementsmentioning
confidence: 99%
“…The results depicted from Figs. 1 and 2 does not change the significance and the magnitude of the finite-temperature electromagnetic corrections to the energy density of the γe + e − radiation plasma[20,22,23] or of the finite temperature QCD corrections[1]. They are of the same order of magnitude of flavor mixing corrections upon the averaged temperature of decoupling for different neutrino species, which also depend on the mixing parameters [1].The energy dependence of an ensemble of neutrino flavors on the statistical weights can be determined and the role of different flavor energy definitions in obtaining the expressions for cosmological neutrino masses can therefore be discriminated.…”
mentioning
confidence: 99%