# Cluster Adjacency and the NMHV 7-particle amplitude in N=4 super Yang-Mills at 4 loops

#### Cluster Adjacency and the NMHV 7-particle amplitude in N=4 super Yang-Mills at 4 loops

- Event time: 2:00pm
- Event date: 12th December 2018
- Speaker: Dr Ömer Gürdoğan (University of Southampton)
- Location: Higgs Centre Seminar Room, Room 4305, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB

### Event details

The idea of constructing scattering amplitudes from their singularities has been a very powerful method for their computation. We introduce the principle of Cluster Adjacency, which governs the analytic structure of amplitudes at tree and loop level. We use this to compute the NMHV scattering amplitude of seven particles in N=4 super Yang-Mills at four loops.

### About Particle Physics Theory seminars

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..