Triangle Seminars
Wednesday, 2 Mar 2011
Fusion of line operators, and quantum integrability in AdS/CFT
📍 London
Raphael Benichou
(VUB)
Abstract:
I will present recent progress in the understanding of two-dimensional sigma-models on the supergroup PSl(nIn). I will emphasize the relevance of these models to study quantum integrability in the AdS/CFT correspondence. In particular i will explain the computation of the fusion of some line operators, the transfer matrices, that encode an infinite number of conserved charges. This computation leads to a first-principle, perturbative derivation of the Hirota equation, which has been argued to provide a solution to the spectrum problem in N=4 SYM.
I will present recent progress in the understanding of two-dimensional sigma-models on the supergroup PSl(nIn). I will emphasize the relevance of these models to study quantum integrability in the AdS/CFT correspondence. In particular i will explain the computation of the fusion of some line operators, the transfer matrices, that encode an infinite number of conserved charges. This computation leads to a first-principle, perturbative derivation of the Hirota equation, which has been argued to provide a solution to the spectrum problem in N=4 SYM.
Posted by: KCL
Thursday, 3 Mar 2011
Yangian symmetry in N=4 super Yang-Mills
Livia Ferro
(Berlin)
Abstract:
Scattering amplitudes in N=4 super Yang-Mills theory have been extensively studied in recent years, due to their remarkable features. In particular, planar amplitudes exhibit a hidden symmetry, the dual superconformal symmetry. I will review how, together with the standard superconformal one, it forms a Yangian structure. Then I will discuss some recent results about the Yangian symmetry of light-like Wilson loops at one loop.
Scattering amplitudes in N=4 super Yang-Mills theory have been extensively studied in recent years, due to their remarkable features. In particular, planar amplitudes exhibit a hidden symmetry, the dual superconformal symmetry. I will review how, together with the standard superconformal one, it forms a Yangian structure. Then I will discuss some recent results about the Yangian symmetry of light-like Wilson loops at one loop.
Posted by: QMW