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by sigmoid10
233 days ago
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You're basically entering cyclical universe model levels of speculation at this point, which is even wilder. Because you only delay the production of the original matter that seeded "our" universe to a point earlier in time. But given everything we know about particle physics today, it seems at least weird that matter-antimatter is such a well preserved symmetry on small scales and so little on large scales. But if the LHC or future colliders found a highly CP violating process (cough SUSY cough) just above the energy scales we can access right now, everything would fall into place pretty neatly. |
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Like I have said, one can hypothesize that before that state when the temperature was in the range of tens of MeV the matter had been even hotter, or on the contrary, that it was cooler, but either way there is no evidence for any earlier conditions and whichever extrapolation is chosen it eventually reaches things that cannot be explained, e.g. if the evolution had been cyclical, why it has reversed, or if the matter was hotter, why it was surrounded by an empty space, allowing expansion and adiabatic cooling, or if it was cooler either whence the extra energy came or what could have caused an adiabatic compression.
So my opinion is that for now any discussion about what could have happened before the moment of time when the temperature was in the range of tens of MeV and there were no other antiparticles besides positrons and antineutrinos and no other abundant hadrons except free protons and free neutrons is a waste of time, because being unverifiable any theory about that time is non-scientific, unless someone would discover a really new theory about the structure of matter, significantly better than anything that has been proposed during the last century, which could offer additional insight.