Working Seminar Mathematical Physics -- The amplituhedron above tree-level

12/03/2015 - 16:00
12/03/2015 - 17:30
Hugh Thomas (UQAM / CRM)
Concordia University, Math Help Center, Room 912.00 / Library Building, 1400 de Maisonneuve Blvd. West, Montreal

Arkani-Hamed and Trnka introduced the amplituhedron as a device for calculating scattering amplitudes of N=4 SYM.  Amplituhedra have several discrete parameters: n, the number of particles, k, which encodes the helicities, and L, the loop level.  I will explain the definition of the amplituhedron with particular reference to the case L>0.  I will also explain progress towards a more concrete understanding of the higher loop level amplituhedra, in joint work with Arkani-Hamed and Trnka.  This will be something of a sequel to my talk on tree-level amplituhedra on Tuesday, December 1, in the CRM mathematical physics seminar, but I will try to keep both as self-contained as possible.   

Last edited by on Wed, 12/02/2015 - 10:54