From 4d ambitwistor strings to on shell diagrams and back

Farrow, Joseph A.; Lipstein, Arthur E.

Abstract

We investigate the relation between 4d ambitwistor string theory and on-shell diagrams for planar N = 4 super-Yang-Mills and N = 8 supergravity, and deduce several new results about their scattering amplitudes at tree-level and 1-loop. In particular, we derive new Grassmannian integral formulae for tree-level amplitudes and obtain new worldsheet formulae for 1-loop amplitudes which are manifestly supersymmetric and supported on scattering equations refined by MHV degree.

Citation

Farrow, J. A., & Lipstein, A. E. (2017). From 4d ambitwistor strings to on shell diagrams and back. Journal of High Energy Physics, 2017(7), Article 114. https://doi.org/10.1007/jhep07%282017%29114

• Journal Article Type: Article
• Acceptance Date: Jul 7, 2017
• Online Publication Date: Jul 25, 2017
• Publication Date: Jul 25, 2017
• Deposit Date: Aug 1, 2017
• Publicly Available Date: Aug 1, 2017
• 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: 2017
• Issue: 7
• Article Number: 114
• DOI: https://doi.org/10.1007/jhep07%282017%29114
• Public URL: https://durham-repository.worktribe.com/output/1350473