Lorentz and CPT Symmetries in DSR
One of the fundamental teachings of Einstein’s relativity theories is that the geometry of the (4D) space–time is globally curved (Riemannian) and locally flat (Minkowskian). This implies the existence of a local frame in which Special Relativity (SR) strictly holds for nongravitational interactions. Such a property is referred to as local Lorentz invariance (LLI) (distinct in principle from local position invariance, LPI, i.e., the independence of such a local Lorentzian frame from space–time position).
KeywordsSpecial Relativity Local Frame Inertial Observer Local Lorentz Invariance Superluminal Propagation
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