From amplitudes to exact S-matrices

Lead Research Organisation: Durham University
Department Name: Mathematical Sciences


The exact S-matrices for a variety of integrable quantum field theories in two dimensions have been known for many years. These theories can often also be studied perturbatively using standard Feynman diagrams, where the integrability manifests itself in a priori surprising cancellations and simplifications. The project will investigate this phenomenon for the affine Toda field theories, where hints of deeper structure already exist in, for example, the relationship between on-shell diagrams for singularities in amplitudes to planar projections of certain higher-dimensional polytopes. The insights from this project can be used for the computations
of amplitudes as well as the bootstrap for Quantum Field Theories in Anti-de Sitter space.


10 25 50
publication icon
Heslop P (2018) The twistor Wilson loop and the amplituhedron in Journal of High Energy Physics

Studentship Projects

Project Reference Relationship Related To Start End Student Name
ST/N504038/1 01/10/2015 31/03/2021
1771147 Studentship ST/N504038/1 01/10/2016 31/05/2020 Alastair Stewart