Solving the Hierarchy Problem with Noncompact Extra Dimensions

Abstract

We show that gravitational effects of global cosmic 3-branes can be responsible for compactification from six to four space-time dimensions, naturally producing the observed hierarchy between electroweak and gravitational forces. The finite radius of the transverse dimensions follows from Einstein's equation, and is exponentially large compared with the scales associated with the 3-brane. The space-time ends on a mild naked singularity at the boundary of the transverse dimensions; nevertheless unitary boundary conditions render the singularity harmless.

11 pages. Several references added

References in corpus (2)

• Modulus Stabilization with Bulk Fields
• An exotic class of Kaluza-Klein models

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