High Energy Theory Group Meeting: SL(2|4) light-cone Hamiltonian and form factor POPE

Alexander Tumanov

30 May 2019, 13:30 
Kaplun Building, Room 319 
High Energy Theory Group Meeting

Abstract: 

We claim that the form factors of the primary operators of the stress tensor multiplet of N=4 SYM can be computed at finite coupling as an expansion around the collinear limit. These form factors admit a dual space interpretation in terms of infinite periodic Wilson lines. This allows us to apply the POPE (pentagon OPE) approach to these objects. One of the leading contributions to the expansion comes from the OPE state of two particles in a singlet of the R-symmetry group. At Born level, the wave functions of these states are determined by diagonalizing the full SL(2|4) light-cone Hamiltonian. It can then be used to determine the form factor transition at weak coupling, as well as to rederive certain known quantities (like the singlet state S-matrix).

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