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Physics and Astronomy

Document Type

Book Chapter

Publication/Presentation Date



In the last decade, a variety of high-precision experiments have searched for miniscule violations of Lorentz symmetry. These searches are largely motivated by the possibility of uncovering experimental signatures from a fundamental unified theory. Experimental results are reported in the framework called the Standard-Model Extension (SME), which describes general Lorentz violation for each particle species in terms of its coefficients for Lorentz violation. Recently, the role of gravitational experiments in probing the SME has been explored in the literature. In this talk, I will summarize theoretical and experimental aspects of these works. I will also discuss recent lunar laser ranging and atom interferometer experiments, which place stringent constraints on gravity coefficients for Lorentz violation.

Publication Title

Relativity in Fundamental Astronomy: Dynamics, Reference Frames, and Data Analysis



Cambridge University Press

Additional Information

This paper was part of the 2009 Proceedings of the International Astronomy Union Symposia and Colloquia edited by S.A. Klioner, P.K. Seidelman, and M.H. Soffel. ISBN: 9780521764810.