as i understand it, it is more like conservation of charge (and "strangeness" to a point)
as each particle is created, it needs an EXACT opposite to prevent an imbalance in charge, mass, momentum etc. conservation of energy is wrong, since it was this energy that created the matter of the universe
my theory follows on the conservation of momentum. each particle is created independant of every other creation. but since the energy of the big bang could not manifest itself entirely as matter, some was kinetic energy, so some momentum is granted
this must then be balanced instantly, to prevent a break of the conservation of momentum, so a twin particle must be going at the same speed, in the opposite direction, both momentums cancel out, and we have our universal 0 of total momentum.
now, since there must be this conservation, each creation must have at least two particles involved (though not necessarily decaying and propagating, where there may be no residual energy)
and if these particles are created, the total charge amongst the created particles must be opossite, but simply creating a proton-electron pair would be out of balance, since the mass is different, and the equation gets messy... perhaps its easier to just make a "mirrored" particle?
for example, nuclear fusion/fisson is governed by the rule: fission can only occur if the child nuclei will eb more stable (higher binding energy per nucleon), so Iron-56 iwill never fission or fuse, since it has the highest binding energy per nucleon of any nucleus.
perhaps a similar thing occurs when matter is created? of course it COULD create different matter (IE proton/electron instead of positron/electron), but since its easier to make an exactly opposite particle, thats what occurs
coupled with the conservation of momentum, this supports my theory of two seperate universes, of matter and antimatter
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hope you enjoyed that, coz i got no more knowledge left today
