For 10 points, name this property of quantities or equations that do not change after a coordinate transformation between relativistic reference frames.
This property is violated in the bicycle model of neutrino oscillation. The anomaly frequencies of electrons and positrons are measured in experiments that attempt to detect violations of this property. Oscar Greenberg made a very disputed claim that the breaking of CPT symmetry necessitates the breaking of this property. Standard Model Extensions contain operators which violate this property. (*) The gauge condition in which del A plus one over c squared times d phi over dt has this property unlike the Coulomb gauge. This property is also possessed by the d'Alembertian and the interval. This property is held by the electromagnetic field's Lagrangian but not Maxwell's equations. For 10 points, name this property of quantities or equations that do not change after a coordinate transformation between relativistic reference frames.
This property is violated in the bicycle model of neutrino oscillation.
Lorentz invariance 