Energy correlators in four-dimensional quantum gravity
Dr. Dmitry Chicherin, LAPTH
The long-range nature of interactions in four-dimensional quantum gravity renders the standard formulation of scattering theory inapplicable and leads to infrared divergences in perturbative amplitudes. To construct a simple class of infrared-finite observables, we focus on inclusive quantities and investigate energy correlators. These observables characterize the asymptotic energy flux in scattering processes and have a long history in collider physics, particularly in the study of QCD dynam…
Abstract: The long-range nature of interactions in four-dimensional quantum gravity renders the standard formulation of scattering theory inapplicable and leads to infrared divergences in perturbative amplitudes. To construct a simple class of infrared-finite observables, we focus on inclusive quantities and investigate energy correlators. These observables characterize the asymptotic energy flux in scattering processes and have a long history in collider physics, particularly in the study of QCD dynamics. We present a one-loop calculation of energy correlators in gravity theories and demonstrate the cancellation of infrared divergences between real and virtual corrections. We also discuss the resummation of large logarithms in the back-to-back asymptotic regime, which is governed by soft infrared physics.
ITMP seminar will be held on Wednesday, March 4 at 18:00.