Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-07-07
Nucl.Phys.B828:317-374,2010
Physics
High Energy Physics
High Energy Physics - Theory
58 pages
Scientific paper
10.1016/j.nuclphysb.2009.11.022
We argue that the scattering amplitudes in the maximally supersymmetric N=4 super-Yang-Mills theory possess a new symmetry which extends the previously discovered dual conformal symmetry. To reveal this property we formulate the scattering amplitudes as functions in the appropriate dual superspace. Rewritten in this form, all tree-level MHV and next-to-MHV amplitudes exhibit manifest dual superconformal symmetry. We propose a new, compact and Lorentz covariant formula for the tree-level NMHV amplitudes for arbitrary numbers and types of external particles. The dual conformal symmetry is broken at loop level by infrared divergences. However, we provide evidence that the anomalous contribution to the MHV and NMHV superamplitudes is the same and, therefore, their ratio is a dual conformal invariant function. We identify this function by an explicit calculation of the six-particle amplitudes at one loop. We conjecture that these properties hold for all, MHV and non-MHV, superamplitudes in N=4 SYM both at weak and at strong coupling.
Drummond James M.
Henn Johannes
Korchemsky Gregory P.
Sokatchev Emery
No associations
LandOfFree
Dual superconformal symmetry of scattering amplitudes in N=4 super-Yang-Mills theory does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dual superconformal symmetry of scattering amplitudes in N=4 super-Yang-Mills theory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual superconformal symmetry of scattering amplitudes in N=4 super-Yang-Mills theory will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-562567