Phenomenologically viable Lorentz-violating quantum gravity
Apr, 2009
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Abstract: (arXiv)
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.- 04.60.-m
- 11.25.Db
- 11.30.Cp
- 11.10.Kk
- Hawking radiation
- horizons
- black holes
- field equations: classical
- any-dimensional
- violation: Lorentz
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