Classical radiation fields for scalar, electromagnetic, and gravitational waves with spacetime-symmetry breaking
arXiv:2307.13374 · doi:10.1016/j.aop.2023.169582
Abstract
An effective field theory framework is used to investigate some Lorentz-violating effects on the generation of electromagnetic and gravitational waves, complementing previous work on propagation. Specifically we find solutions to a modified, anisotropic wave equation, sourced by charge or fluid matter. We derive the radiation fields for scalars, classical electromagnetic radiation, and partial results for gravitational radiation. For gravitational waves, the results show longitudinal and breathing polarizations proportional to coefficients for spacetime-symmetry breaking.
Clarifications and references added. Matches published version
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