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arXiv · 0904.4464

Phenomenologically viable Lorentz-violating quantum gravity

Thomas P. Sotiriou·Matt Visser·Silke Weinfurtner
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Abstract

Horava's "Lifschitz point gravity" has many desirable features, but in its original incarnation one is forced to accept a non-zero cosmological constant of the wrong sign to be compatible with observation. We develop an extension of Horava's model that abandons "detailed balance", and in 3+1 dimensions exhibit all five marginal (renormalizable) and four relevant (super-renormalizable) operators, as determined by power counting. We also consider the classical limit of this theory, evaluate the Hamiltonian and super-momentum constraints, and extract the classical equations of motion in a form similar to the ADM formulation of general relativity. This puts the model in a framework amenable to developing detailed precision tests.

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Thomas P. Sotiriou, Matt Visser, Silke Weinfurtner. 2009-06-26. Phenomenologically viable Lorentz-violating quantum gravity. https://doi.org/10.1103/physrevlett.102.251601

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