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Twistor actions and twistor strings

Le : 26/03/2009 14h15
Par : Lionel MASON (Université d'Oxford)
Lieu :
Lien web :
Résumé : The talk will start by reviewing Witten's basic conjecture concerning the computation of scattering amplitudes in Yang-Mills theory by means of integration over moduli spaces of curves in twistor space. It will then discuss the Chalmers & Segal action on space-time for perturbing around the self-dual sector. The talk will then go on to reformulate this action on twistor space and finally to show how Witten's conjecture can be proved using this twistor-action formulation. The talk is based on hep-th/0507269, hep-th/0604040 and hep-th/0702035.