>>11131407In the standard model. There's electroweak interaction and the strong force, which aren't unified as of now. They are treated in the same framework though.
Through symmetry breaking, electroweak interaction decays into electromagnetic and weak interaction. This symmetry breaking mechanism basically implies that our universe once was in an excited state, but then decayed into a lower energy state with lower symmetry.
Cool fact about the Higgs boson: it's in a mass range that gives a high probability for our universe not being in its ground state. If it ever fluctuates into its ground state, another symmetry breaking will occur, photons will suddenly gain a mass and hence, electromagnetism will have finite reach. This makes all atoms fall apart and everything dies. Cool, ain't it?
