symmetry breaking
effect or phenomenon that is not invariant under a presumed or approximate symmetry of a physical system
CP violation
violation of CP (charge-parity) symmetry in particle physics and cosmology
spontaneous symmetry breaking
physical phenomenon in which the vacuum expectation value of a field is not invariant under a symmetry of the action, so that a symmetry present at high temperatures is broken at low temperatures
phase separation
the creation of two distinct phases from a single homogeneous mixture
Explicit symmetry breaking
symmetry breaking in physics