Theoretical Physics Seminar: Georgios Papathanasiou

  • Date: –15:00
  • Location: Ångströmlaboratoriet, Lägerhyddsvägen 1 Oseenska rummet (73121)
  • Lecturer: Georgios Papathanasiou
  • Contact person: Aleksandr Popolitov
  • Seminarium

Cluster algebras, integrability and scattering amplitudes

I present recent progress towards determining the planar S-matrix of maximally supersymmetric Yang-Mills theory, thanks to the rich interplay between its perturbative analytic properties in general kinematics, and its integrable structure in special kinematics. The former are related to cluster algebras, and allow for the computation of amplitudes with six/seven gluons up to seven/four loops, whereas the latter yields all amplitudes in the multi-Regge limit at any loop order.