Spontaneous symmetry breaking
Spontaneous symmetry breaking can create a  particle called a Higgs boson. This is a particle which is the force transferring particle (boson) of the Higgs field. The Higgs field gives mass to fundamental particles such as electrons. Also, many scientists believe in the Higgs effect (which is very similar to spontaneous symmetry breaking) to answer questions that are not answered in the standard model of physics. The standard model predicts that certain types of quarks should have a mass of zero, while in reality they have a non-zero mass value. Some scientists believe that spontaneous symmetry breaking is the answer.