(University of Cambridge), Mathieu Pellen
(University of Cambridge)
On resonances, amplitudes and the UV completion of gravity
Making use of on-shell amplitude methods we will build the 4-point amplitudes for spin-J resonance exchange and Standard Model (+ graviton) external states. We then assemble these components in search of a unitary and causal ultraviolet completion of gravity. The solution found in this way, in addition to infinite towers of states in the UV, requires modification of gravity in the infrared.
Rodrigo Alonso De Pablo
(University of Durham (GB))