There is considered hypothetical decay of proton - usually into positron and neutral pion, which quickly decays into two photons.
Such decays would allow standard matter to completely change into EM waves (proton + electron -> ~4 photons).
So this decay allow to get to more stable state and temperatures in collapsing neutron stars should make it easier - it suggests that neutron star instead of creating a mysterious matter state (black holes), should 'evaporate' - turn its core into photons ...
I've looked at a few papers and I haven't found any considered this type of consequences?
If this process requires extreme conditions to be statistically important, it would happen practically only in the center, heating the star ...
Maybe it could explain extremely high energetic cosmic rays? (maybe in extremely high temperatures high energy photons could itself destroy proton + electron structure, absorbing part of their energy...)
What do you think about proton decay?
If it would be true - would black holes be created?