We disentangle the contribution of scalars to the OPE series of null hexagonal Wilson loops/MHV gluon scattering amplitudes in multicolour N=4 SYM. In specific, we develop a systematic computation of the SU(4) matrix part of the Wilson loop by means of Young tableaux (with several examples). Then, we use a peculiar factorisation property (when a group of rapidities becomes large) to deduce an explicit polar form. Furthermore, we emphasise the advantages of expanding the logarithm of the Wilson loop in terms of ‘connected functions’ as we apply this procedure to find an explicit strong coupling expansion (definitively proving that the leading order can prevail on the classical AdS 5 string contribution).
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Titolo: | The contribution of scalars to N=4SYM amplitudes II: Young tableaux, asymptotic factorisation and strong coupling |
Autori: | ROSSI, Marco [Membro del Collaboration Group] |
Data di pubblicazione: | 2018 |
Rivista: | |
Handle: | http://hdl.handle.net/20.500.11770/290710 |
Appare nelle tipologie: | 1.1 Articolo in rivista |