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arXiv · 1901.00011

Generalized Fishnets and Exact Four-Point Correlators in Chiral CFT$_4$

Vladimir Kazakov·Enrico Olivucci·Michelangelo Preti
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Abstract

We study the Feynman graph structure and compute certain exact four-point correlation functions in chiral CFT$_4$ proposed by Ö.Gürdoğan and one of the authors as a double scaling limit of $γ$-deformed $\mathcal{N}=4$ SYM theory. We give full description of bulk behavior of large Feynman graphs: it shows a generalized "dynamical fishnet" structure, with a dynamical exchange of bosonic and Yukawa couplings. We compute certain four-point correlators in the full chiral CFT$_4$, generalizing recent results for a particular one-coupling version of this theory -- the bi-scalar "fishnet" CFT. We sum up exactly the corresponding Feynman diagrams, including both bosonic and fermionic loops, by Bethe-Salpeter method. This provides explicit OPE data for various twist-2 operators with spin, showing a rich analytic structure, both in coordinate and coupling spaces.

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Vladimir Kazakov, Enrico Olivucci, Michelangelo Preti. 2019-06-18. Generalized Fishnets and Exact Four-Point Correlators in Chiral CFT$_4$. https://doi.org/10.1007/jhep06(2019)078

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