Relativistic Gravity With a Dynamical Preferred Frame

Abstract

While general relativity possesses local Lorentz invariance, both canonical quantum gravity and string theory suggest that Lorentz invariance may be broken at high energies. Broken Lorentz invariance has also been postulated as an explanation for astrophysical anomalies such as the missing GZK cutoff. Therefore, we seek an effective field theory description of gravity where Lorentz invariance is broken. We will construct a candidate theory and then briefly discuss some of the implications.

5 pages,Talk presented by D. Mattingly at CPT01; the Second Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, 15-18 Aug. 2001

References in corpus (3)

• Loop quantum gravity and light propagation
• The stress-energy tensor for trans-Planckian cosmology
• Causality, shocks and instabilities in vector field models of Lorentz symmetry breaking

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