Resolved noncrossing formula for the biadjoint scalar amplitude

From papers

Let u1,,unC3u_1,\ldots,u_n\in\mathbb{C}^3 be the columns of a matrix, let NC3,n\mathbf{NC}_{3,n} be the noncrossing complex of nonfrozen 33-subsets, and let m^n(3),NC(I,I)\hat{m}^{(3),NC}_n(\mathbb{I},\mathbb{I}) denote the resolved biadjoint scalar amplitude. The resolved minors and potential are defined by the formulas in the source, and η^J(s)\hat{\eta}_J(s) are linear functions of the kinematic variables.

Resolved amplitude conjecture. There exists a set of linear functions η^J(s)\hat{\eta}_J(s) such that

m^n(3),NC(I,I)={J1,,J2(n4)}NC3,nj=12(n4)1η^Jj.\hat{m}^{(3),NC}_n(\mathbb{I},\mathbb{I})=\sum_{\{J_1,\ldots,J_{2(n-4)}\}\in\mathbf{NC}_{3,n}}\prod_{j=1}^{2(n-4)}\frac{1}{\hat{\eta}_{J_j}}.

This proposes a noncrossing-complex triangulation formula for the resolved amplitude, generalizing the corresponding associahedral amplitude formula; its resolution status is not established in the supplied text.

Progress summary

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Sources & referencesView supporting material

Primary source

Nick Early, “Planarity in Generalized Scattering Amplitudes: PK Polytope, Generalized Root Systems and Worldsheet Associahedra”, arXiv:2106.07142 (2022).

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