München 2009 – wissenschaftliches Programm

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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 8: Quantenfeldtheorie 1

MP 8.2: Vortrag

Donnerstag, 12. März 2009, 09:20–09:40, M010

All tree-level amplitudes in N=4 SYM — •Johannes Henn¹ and James Drummond² — ¹HU Berlin, Deutschland — ²LAPTH, Annecy, Frankreich

We give an explicit formula for all tree amplitudes in N=4 SYM, derived by solving the recently presented supersymmetric tree-level recursion relations. The result is given in a compact, manifestly supersymmetric form and we show how to extract from it all possible component amplitudes for an arbitrary number of external particles and any arrangement of external particles and helicities. We focus particularly on extracting gluon amplitudes which are valid for any gauge theory. The formula for all tree-level amplitudes is given in terms of nested sums of dual superconformal invariants and it therefore manifestly respects both conventional and dual superconformal symmetry.