Weak Gravity Conjecture from Unitarity and Causality

Abstract

The Weak Gravity Conjecture, motivated by string theory and black hole thought experiments, states that gravity is the weakest force. In particular, it claims that there exist theoretical bounds on the charge-to-mass ratio and the axion decay constant in quantum gravity, which provides theoretical constraints on models of inflation and dark matter for example. In this talk, the speaker will introduce his collaborators' recent work providing its strong evidence based on unitarity and causality.

About the program

For more information, please refer to the program website at http://iasprogram.ust.hk/particle_theory.