Weak Gravity Conjecture with Large Extra Dimensions

Abstract

In the presence of large extra dimensions, the fundamental Planck scale can be much lower than the apparent four-dimensional Planck scale. In this setup, the weak gravity conjecture implies a much more stringent constraint on the UV cutoff for the U(1) gauge theory in four dimensions. This new energy scale may be relevant to LHC.

Comments: 8 pages; Refs added, version for publication in PLB