Off-shell CHY amplitudes and Feynman graphs

Autor:	Louise Dolan, Peter Goddard
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	Scattering Amplitudes Field Theories in Higher Dimensions Field Theories in Lower Dimensions Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Zdroj:	Journal of High Energy Physics, Vol 2020, Iss 4, Pp 1-19 (2020)
Druh dokumentu:	article
ISSN:	1029-8479
DOI:	10.1007/JHEP04(2020)141
Popis:	Abstract A polynomial form is established for the off-shell CHY scattering equations proposed by Lam and Yao. Re-expressing this in terms of independent Mandelstam invariants provides a new expression for the polynomial scattering equations, immediately valid off shell, which makes it evident that they yield the off-shell amplitudes given by massless 𝜙3 Feynman graphs. A CHY expression for individual Feynman graphs, valid even off shell, is established through a recurrence relation.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/7882fcddeb484df0a5b1b9489fe2bd96 Zobrazit plný text záznamu Full text from SpringerLink View record in DOAJ