Covariant Renormalizable Gravity Theories on (Non) Commutative Tangent Bundles

Original · EN

The field equations in modified gravity theories possess an important decoupling property with respect to certain classes of nonholonomic frames. This allows us to construct generic off--diagonal solutions depending on all spacetime coordinates via generating and integration functions containing (un--)broken symmetry parameters. Some corresponding analogous models have a nice ultraviolet behavior and seem to be (super) renormalizable in a sense of covariant modifications of Hořava--Lifshits (HL) and ghost free gravity. The apparent noncommutativity and breaking of Lorentz invariance by quantum effects can be encoded into geometric objects and basic equations on noncommutative tangent Lorentz. The constructions can be extended to include conjectured covariant reonormalizable models with effective Einstein fields with (non)commutative variables.