Spacetime Symmetry Breaking and Einstein-Maxwell Theory

Abstract

A vector model with a hybrid form of spacetime symmetry breaking consisting of explicit diffeomorphism breaking but spontaneous local Lorentz violation is presented. The combined effects of these symmetry breakings give rise to a theory obeying the Einstein-Maxwell equations in a preferred spatially homogeneous and isotropic frame, with photons emerging as massless Nambu-Goldstone modes. Interpretations and possible generalizations of this model are discussed, and comparisons are made to previous models describing photons as Nambu-Goldstone modes.

9 pages

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Cited by in corpus (15)

• Backgrounds in gravitational effective field theory
• Superconducting-Gravimeter Tests of Local Lorentz Invariance
• Gravity with explicit spacetime symmetry breaking and the Standard-Model Extension
• Searches for beyond-Riemann gravity
• Noether identities in gravity theories with nondynamical backgrounds and explicit spacetime symmetry breaking
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• Gravity with Explicit Diffeomorphism Breaking
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• On the self-consistency of compact objects in Lorentz-violating gravity theories
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• Charged Lifshitz black holes from general covariance breaking
• The Standard-Model Extension and Gravitational Tests
• Single-Particle Quantum Mechanics of the Free Klein-Gordon Equation with Lorentz Violation
• Diffeomorphism Invariance Breaking in Gravity and Cosmological Evolution