11 Nov/20
14:00 - 16:00 (Europe/Zurich)

Gravity: The force from the UV


Zoom Only at CERN

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, due to the maximal growth rate of this force with energy.  I will briefly discuss ongoing work on the space of consistent low-energy effective theories, with preliminary results in scalar models showing that causality turns dimensional analysis estimates into sharp numerical bounds.