Speaker
Description
The Weak Gravity Conjecture (WGC), an important proposal for consistency of quantum gravity, states a relation between gravity and Abelian gauge interactions of a consistent EFT. In flat space, the WGC necessitates existence of a charged particle with charge-to-mass ratio larger than that of the extremal black holes. However, the statement needs revision in general spacetimes. In this talk, I will discuss the formulation of the WGC that applies to theories with a cosmological constant and dilaton field. Adhering to the original motivation for WGC of extremal black hole decay, we analyze the dynamics of black hole charged emission and a repulsive force condition between extremal black holes and charged particles, providing a general prescription of obtaining the WGC bound. Further, the differences and relations between WGC and other bounds including the black hole extremality condition will be explained.
