The enormous energies so generated would, on changing momenta, lead to an X-ray background 100 times that observed, contradiction. I've not included some more fundamental problems yet. Standard Model predicts abundant magnetic monopoles - not one has been found experimentally. All parts of the proposed Universe must expand simultaneously, no method suggested to co-ordinate this. Some, like Omega, must be 'fine tuned' to 58 places of decimals to make the model work.
Probabilities approach zero.
Inflation theory is based on the theory of fundamental particles, which is itself unproven and inadequate - two interacting 'houses of cards'. Still, theories are never discarded unless a better one exists. Yes, I think so. There has been little attention paid to it, and it hasn't received the hype and theoretical formalism that has been given to the Big Bang, so isn't fully formed. An alternative cosmology Let me outline an alternative.