Towards a Higgs phase of gravity in string theory

Abstract

We consider a braneworld scenario with a black brane parallel to our brane, aiming towards a Higgs phase of gravity in string theory. The existence of the black brane spontaneously breaks the Lorentz symmetry on our brane but preserves the rotational and translational invariance. If all moduli are stabilized then this should lead to a Higgs phase of gravity. We investigate moduli stabilization by using a KKLT-type moduli potential in the context of type IIB warped flux compactification.

Comments: 34 pages. v2: discussion of consistency conditions including moduli stabilization. v3: version accepted for publication in JHEP