On-shell methods for the two-loop dilatation operator and finite remainders

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Abstract: We compute the two-loop minimal form factors of all operators in the SU(2) sector of planar N=4$$ \mathcal{N}=4 $$ SYM theory via on-shell unitarity methods. From the UV diver-gence of this result, we obtain the two-loop dilatation operator in this sector. Furthermore, we calculate the corresponding finite remainder functions. Since the operators break the supersymmetry, the remainder functions do not have the property of uniform transcen-dentality. However, the leading transcendentality part turns out to be universal and is identical to the corresponding BPS expression. The remainder functions are shown to satisfy linear relations which can be explained by Ward identities of form factors following from R-symmetry.

Original languageEnglish
Article number12
JournalJournal of High Energy Physics
Volume2015
Issue number10
Number of pages24
ISSN1126-6708
DOIs
Publication statusPublished - 1 Oct 2015
Externally publishedYes

    Research areas

  • Integrable Field Theories, Scattering Amplitudes

ID: 227488727