Plahte diagrams for string scattering amplitudes

Srisangyingcharoen, Pongwit; Mansfield, Paul

doi:10.1007/jhep04(2021)017

Plahte diagrams for string scattering amplitudes

Srisangyingcharoen, Pongwit; Mansfield, Paul

Authors

Pongwit Srisangyingcharoen pongwit.srisangyingcharoen@durham.ac.uk
PGR Student Doctor of Philosophy

Paul Mansfield

Abstract

Plahte identities are monodromy relations between open string scattering amplitudes at tree level derived from the Koba-Nielsen formula. We represent these identities by polygons in the complex plane. These diagrams make manifest the appearance of sign changes and singularities in the analytic continuation of amplitudes. They provide a geometric expression of the KLT relations between closed and open string amplitudes. We also connect the diagrams to the BCFW on-shell recursion relations and generalise them to complex momenta resulting in a relation between the complex phases of partial amplitudes.

Citation

Srisangyingcharoen, P., & Mansfield, P. (2021). Plahte diagrams for string scattering amplitudes. Journal of High Energy Physics, 2021(4), Article 17. https://doi.org/10.1007/jhep04%282021%29017

Journal Article Type	Article
Acceptance Date	Feb 4, 2021
Online Publication Date	Apr 1, 2021
Publication Date	2021
Deposit Date	Jul 27, 2021
Publicly Available Date	Jul 27, 2021
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	2021
Issue	4
Article Number	17
DOI	https://doi.org/10.1007/jhep04%282021%29017

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