With the recent discovery of a new boson, which is likely to be the elusive Higgs boson, the standard model for particle physics would not be complete. Keep in mind that this only confirms the model that has been used for a long time now. This explains the early moments after the big bang where there was the electroweak force which separated and became the electromagnetic and weak nuclear forces (there’s also the strong nuclear force). This doesn’t unify the theory of gravity. Physicists must still develop a theory of quantum gravity.
July 11th, 2012