Correlation functions of the chiral stress-tensor multiplet in N=4 SYM

Chicherin, D.; Doobary, R.; Eden, B.; Heslop, P.; Korchemsky, G.P.; Mason, L.; Sokatchev, E.

Abstract

We give a new method for computing the correlation functions of the chiral part of the stress-tensor supermultiplet that relies on the reformulation of N=4 SYM in twistor space. It yields the correlation functions in the Born approximation as a sum of Feynman diagrams on twistor space that involve only propagators and no integration vertices. We use this unusual feature of the twistor Feynman rules to compute the correlation functions in terms of simple building blocks which we identify as a new class of N=4 off-shell superconformal invariants. Making use of the duality between correlation functions and planar scattering amplitudes, we demonstrate that these invariants represent an off-shell generalisation of the on-shell invariants defining tree-level scattering amplitudes in N=4 SYM.

Citation

Chicherin, D., Doobary, R., Eden, B., Heslop, P., Korchemsky, G., Mason, L., & Sokatchev, E. (2015). Correlation functions of the chiral stress-tensor multiplet in N=4 SYM. Journal of High Energy Physics, 2015, Article 198. https://doi.org/10.1007/jhep06%282015%29198

• Journal Article Type: Article
• Acceptance Date: Jun 12, 2015
• Online Publication Date: Jun 29, 2015
• Publication Date: Jun 29, 2015
• Deposit Date: Jul 1, 2015
• Publicly Available Date: Jul 23, 2015
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2015
• Article Number: 198
• DOI: https://doi.org/10.1007/jhep06%282015%29198
• Keywords: Supersymmetric gauge theory, Scattering Amplitudes, Extended Supersymmetry, Superspaces.
• Public URL: https://durham-repository.worktribe.com/output/1402848
• Related Public URLs: http://arxiv.org/abs/1412.8718