DESY/Hamburg U. String Theory Seminar

Gravity: The force from the UV

by Simon Caron-Huot (McGill University)


Dispersion relations are statements of causality. They give sum rules connecting infrared and ultraviolet physics.  While they originate in optics and quantum field theory, I will argue that their 'true purpose' is gravity, viewed as a low-energy effective theory. This is due to the unique energy dependence of this force.  I will present ongoing work mapping out the space of consistent effective theories, including recent results deriving in scalar models quantitative version of dimensional analysis scaling from causality. (Password: 246065)