# Gravity, Lorentz violation, and the standard model

@article{Kosteleck2004GravityLV, title={Gravity, Lorentz violation, and the standard model}, author={Alan Kosteleck{\'y}}, journal={Physical Review D}, year={2004}, volume={69}, pages={105009} }

The role of the gravitational sector in the Lorentz- and CPT-violating standard-model extension ~SME! is studied. A framework is developed for addressing this topic in the context of Riemann-Cartan spacetimes, which include as limiting cases the usual Riemann and Minkowski geometries. The methodology is first illustrated in the context of the QED extension in a Riemann-Cartan background. The full SME in this background is then considered, and the leading-order terms in the SME action involving…

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