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Forthcoming events in this series
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An Operator Product Expansion for Polygonal null Wilson Loops
Abstract
This talk will be based on the article arXiv:1006.2788.
12:00
Thermodynamic Bubble Ansatz and Six Gluon Scattering at Strong Coupling
Abstract
This talk will follow the paper 0911.4708.
T-duality in AdS$_5$
Abstract
This will discuss the paper of Ricci, Tseytlin & Wolf from 2007.
Integrable systems for amplitudes at Strong coupling
Abstract
This will be a review of recent work that obtains amplitudes at strong coupling from certain minimal surfaces in AdS.
Hopf Algebras and BCFW recursion after Kreimer
Abstract
Abstract: We will review Kreimer's construction of a Hopf algebra for Feynman graphs, and explore several aspects of this structure including its relationship with renormalization and the (trivial) Hochschild cohomology of the algebra. Although Kreimer's construction is heavily tied with the language of renormalization, we show that it leads naturally to recursion relations resembling the BCFW relations, which can be expressed using twistors in the case of N=4 super-Yang-Mills (where there are no ultra-violet divergences). This could suggest that a similar Hopf algebra structure underlies the supersymmetric recursion relations...
Dual conformal invariance; a journey between two Grassmannians
Abstract
After hep-th/0909.0483
Local space-time physics from the grassmannian
Abstract
Based on hep-th/0912.3249 by Arkani-Hamed et. al..
Unification of Grassmannian Residues and Dualities after Arkani-Hamed et. al.
Abstract
This is a review of hep-th/0912.4912