Parity from SO(7, 1) and SO(7, 7) gauge symmetries
April 29, 2022
Left-Right parity symmetry $\mathcal P$ can arise from a unified gauge symmetry, involving gravitational interactions. Parity can survive to the symmetry breaking of the gauge group at Planck scale and can be spontaneously broken at lower energies, as in Left-Right symmetric models with $\mathcal P$.
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