GGI Tea Breaks' - "Scattering Amplitudes in Maximally Supersymmetric Gauge Theory and a New Duality" by Lance Dixon

Wednesday 9 Feb 2022, 17:00 → 18:00 Europe/Rome

Scattering amplitudes are the arena where quantum field theory directly meets collider experiments. An excellent model for scattering in QCD is provided by N=4 super-Yang-Mills theory, particularly in the planar limit of a large number of colors, where the theory becomes integrable, and amplitudes become dual to light-like polygonal Wilson-loop expectation values. The first nontrivial case is the 6-gluon amplitude (hexagonal Wilson loop), which can be computed to 7 loops using a bootstrap which is based on the rigidity of the function space of multiple polylogarithms, together with a few other conditions. It is also possible to bootstrap a particular form factor for the chiral stress-tensor operator to produce 3 gluons, through 8 loops. Remarkably, the two sets of results are related by a mysterious “antipodal” duality, which exchanges the role of branch cuts and derivatives. I will describe how the bootstrapping works and what we know about this new duality.

Meeting will be on Zoom.

The event is part of the online seminar series GGI Tea Breaks'.

For details: https://www.ggi.infn.it/seminars.pl