Tests of Lorentz Symmetry in the Gravitational Sector

  title={Tests of Lorentz Symmetry in the Gravitational Sector},
  author={Aur{\'e}lien Hees and Quentin G. Bailey and A. Bourgoin and H'elene Pihan-Le Bars and Christine Guerlin and Christophe Le Poncin-lafitte},
Lorentz symmetry is one of the pillars of both General Relativity and the Standard Model of particle physics. Motivated by ideas about quantum gravity, unification theories and violations of CPT symmetry, a significant effort has been put the last decades into testing Lorentz symmetry. This review focuses on Lorentz symmetry tests performed in the gravitational sector. We briefly review the basics of the pure gravitational sector of the Standard-Model Extension (SME) framework, a formalism… 

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