K-essence Explains a Lorentz Violation Experiment

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Li, Miao
Pang, Yi
Wang, Yi
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Abstract
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Recently, a state of the art experiment shows evidence for Lorentz violation in the gravitational sector. To explain this experiment, we investigate a spontaneous Lorentz violation scenario with a generalized scalar field. We find that when the scalar field is nonminimally coupled to gravity, the Lorentz violation induces a deformation in the Newtonian potential along the direction of Lorentz violation.
Comment: 8 pages, the final version, discussion and references added
Keywords
General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology, High Energy Physics - Theory
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