Sakharov gave three conditions for the matter-antimatter asymmetry observed in the universe.

(1) Baryon number violation: Don’t have any experimental confirmation yet. (2) C-symmetry and CP-symmetry violation: Observed experimentally (3) Interaction out of thermal equilibrium: My question is here; is there any kind of the previous study done or any study going for this search?

I will be thankful if someone gives any kind of link to some paper or explains about this search.

  • $\begingroup$ did you try search engines? here is a talk interaction out of thermal euilibrium? indico.cern.ch/event/686555/contributions/2956954/attachments/… , from arxiv.org/pdf/1803.00820.pdf , also iopscience.iop.org/article/10.1088/1742-6596/952/1/012006/pdf . I searched for "baryon asymmetry interaction out of thermal euilibrium" $\endgroup$ – anna v Oct 18 '19 at 4:22
  • $\begingroup$ Thank you for comment. I searched but didn't find any satisfactory answers. So if I understood, there is no interaction out of thermal equilibrium observed experimentally? $\endgroup$ – DBS Oct 18 '19 at 4:59
  • $\begingroup$ I believe so, other than the baryon asymmetry it is invoked to explain. So if there is a mathematical connection in one of the papers, the baryon asymmetry would be the experimental observation. In heavy ion collisions they are trying , but they use the cosmic data as example for qcd! indico.cern.ch/event/598530/contributions/2547224/attachments/… $\endgroup$ – anna v Oct 18 '19 at 5:29
  • $\begingroup$ They consider the various cosmological particle decouplings as examples out of thermal equilibrium $\endgroup$ – anna v Oct 18 '19 at 5:45
  • $\begingroup$ But the decouplings magnitude or number may be so small from which we can't say that there is some interaction out of thermal equilibrium. $\endgroup$ – DBS Oct 18 '19 at 5:57

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