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Quantum-gravity phenomenology, Lorentz symmetry, and the SME

Ralf Lehnert
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Abstract

Violations of spacetime symmetries have recently been identified as promising signatures for physics underlying the Standard Model. The present talk gives an overview over various topics in this field: The motivations for spacetime-symmetry research, including some mechanisms for Lorentz breaking, are reviewed. An effective field theory called the Standard-Model Extension (SME) for the description of the resulting low-energy effects is introduced, and some experimental tests of Lorentz and CPT invariance are listed.

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Ralf Lehnert. 2007-03-16. Quantum-gravity phenomenology, Lorentz symmetry, and the SME. https://doi.org/10.1063/1.2751950

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