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C.H. Lai (Institute for Fusion Studies, University of Texas at Austin), T. Tajima (University of Texas at Austin & LLNL)
Weak interactions play an important role in early universe plasma collection, especially on neutrinos and the corresponding leptons. It also has important effects on the detail balance of the primordial nucleosynthesis, especially on the production of He and light elements. At around temperature T=300 GeV, the primordial plasma undergone electroweak spontaneous symmetry breaking (SSB) phase transition. Some of the gauge bosons and other particles gain mass via Higgs mechanism.
Deduced from Weinberg-Salam electroweak theory, a Boltzmann equation and subsequent fluid equations are derived for the primordial electron-positron-neutrino-photon plasma. A collective instability that separates the phases of electrons(and positrons) and neutrinos(and anti-neutrinos) is discussed. We also discussed the application of the fluctuation-dissipation theory in this system of plasma. Astrophysical applications and implications are explored, particularly in supernovae and possibly in GRB(Gamma Ray Bursts).
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