In cosmological models of the Big Bang, the lepton epoch was the period in the evolution of the early universe in which the leptons dominated the mass of the Universe. It started roughly 1 second after the Big Bang, after the majority of hadrons and anti-hadrons annihilated each other at the end of the hadron epoch.[1] During the lepton epoch, the temperature of the Universe was still high enough to create neutrino and electron-positron pairs. Approximately 10 seconds after the Big Bang, the temperature of the universe had fallen to the point where electron-positron pairs were gradually annihilated.[2] A small residue of electrons needed to charge-neutralize the Universe[clarification needed] remained along with free streaming neutrinos: an important aspect of this epoch is the neutrino decoupling.[3] The Big Bang nucleosynthesis epoch follows, overlapping with the photon epoch.[4][5]
^Fromerth, M.J.; Kuznetsova, I.; Labun, L.; Letessier, J.; Rafelski, J. (2012). "From Quark-Gluon Universe to Neutrino Decoupling: 200 < T < 2MeV". Acta Physica Polonica B. 43 (12): 2261. arXiv:1211.4297. doi:10.5506/APhysPolB.43.2261. ISSN 0587-4254. S2CID 118448487.
^"Thermal history of the Universe and early growth of density fluctuations" (PDF). Guinevere Kauffmann. Max Planck Institute for Astrophysics. Retrieved 2016-01-06.
^Birrell, Jeremiah; Yang, Cheng Tao; Rafelski, Johann (2015). "Relic neutrino freeze-out: Dependence on natural constants". Nuclear Physics B. 890: 481–517. arXiv:1406.1759. Bibcode:2015NuPhB.890..481B. doi:10.1016/j.nuclphysb.2014.11.020.
^"First few minutes". Eric Chaisson. Harvard Smithsonian Center for Astrophysics. Retrieved 2016-01-06.
^"Timeline of the Big Bang". The physics of the Universe. Retrieved 2016-01-06.
Allday, Jonathan (2002). Quarks, Leptons and the Big Bang. Second Edition. ISBN978-0-7503-0806-9.
This physical cosmology-related article is a stub. You can help Wikipedia by expanding it.
lepton, epoch, cosmological, models, bang, lepton, epoch, period, evolution, early, universe, which, leptons, dominated, mass, universe, started, roughly, second, after, bang, after, majority, hadrons, anti, hadrons, annihilated, each, other, hadron, epoch, du. In cosmological models of the Big Bang the lepton epoch was the period in the evolution of the early universe in which the leptons dominated the mass of the Universe It started roughly 1 second after the Big Bang after the majority of hadrons and anti hadrons annihilated each other at the end of the hadron epoch 1 During the lepton epoch the temperature of the Universe was still high enough to create neutrino and electron positron pairs Approximately 10 seconds after the Big Bang the temperature of the universe had fallen to the point where electron positron pairs were gradually annihilated 2 A small residue of electrons needed to charge neutralize the Universe clarification needed remained along with free streaming neutrinos an important aspect of this epoch is the neutrino decoupling 3 The Big Bang nucleosynthesis epoch follows overlapping with the photon epoch 4 5 See also editTimeline of the early universe Chronology of the universe Cosmology Big BangReferences edit Fromerth M J Kuznetsova I Labun L Letessier J Rafelski J 2012 From Quark Gluon Universe to Neutrino Decoupling 200 lt T lt 2MeV Acta Physica Polonica B 43 12 2261 arXiv 1211 4297 doi 10 5506 APhysPolB 43 2261 ISSN 0587 4254 S2CID 118448487 Thermal history of the Universe and early growth of density fluctuations PDF Guinevere Kauffmann Max Planck Institute for Astrophysics Retrieved 2016 01 06 Birrell Jeremiah Yang Cheng Tao Rafelski Johann 2015 Relic neutrino freeze out Dependence on natural constants Nuclear Physics B 890 481 517 arXiv 1406 1759 Bibcode 2015NuPhB 890 481B doi 10 1016 j nuclphysb 2014 11 020 First few minutes Eric Chaisson Harvard Smithsonian Center for Astrophysics Retrieved 2016 01 06 Timeline of the Big Bang The physics of the Universe Retrieved 2016 01 06 Allday Jonathan 2002 Quarks Leptons and the Big Bang Second Edition ISBN 978 0 7503 0806 9 nbsp This physical cosmology related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Lepton epoch amp oldid 1166523447, wikipedia, wiki, book, books, library,
