Gravity Couplings in the Standard-Model Extension

Details Gravity Couplings in the Standard-Model Extension Gravity Couplings in the Standard-Model Extension

2010-08-02

arxiv.org/abs/1008.0345v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, Presented at the Fifth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 28-July 2, 2010

Scientific paper

The Standard-Model Extension (SME) is an action-based expansion describing general Lorentz violation for known matter and fields, including gravity. In this talk, I will discuss the Lorentz-violating gravity couplings in the SME. Toy models that match the SME expansion, including vector and two-tensor models, are reviewed. Finally I discuss the status of experiments and observations probing gravity coefficients for Lorentz violation.

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