Does the baryogenesis happen both in GUT epoch and electroweak Epoch during the history of the universe? If yes, are there any differences during this two times?

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    $\begingroup$ As far as i am aware they constitute two independent baryogenesis theories. So one theory predicts the baryogenesis in the GUT epoch while another possibility is the baryogenesis during the electroweak epoch. $\endgroup$ – Jaywalker May 25 '16 at 14:48
  • $\begingroup$ Most theories involve the GUT epoch where X and Y bosons exchange quarks with leptons. $\endgroup$ – Lawrence B. Crowell May 25 '16 at 15:57
  • $\begingroup$ Baryogenesis, i.e. the excess of baryons over antibaryons, is not modeled with a unique model. It is still under research, and a long story for the answer format here. Have a look at this physics.ucsc.edu/~joel/Cosmology224/Lectures/… . It will all depend on the model, if a single cause or multiple ones are included. $\endgroup$ – anna v May 25 '16 at 16:15
  • $\begingroup$ @Jaywalker Thank you very much for pointing out that these baryogenesis in different epochs are from different theories. So there are of course some models that take these two baryogenesis into account simutaneously. Right? $\endgroup$ – Wein Eld May 25 '16 at 18:32
  • $\begingroup$ @LawrenceB.Crowell It sounds like baryogenesis via leptongenesis, as Sphaleron process in electroweak theory? $\endgroup$ – Wein Eld May 25 '16 at 18:34

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