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arXiv · 2005.06446

UV consistency conditions for CHY integrands

Laurentiu Rodina
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Abstract

We extend on-shell bootstrap methods from spacetime amplitudes to the worldsheet objects of the CHY formalism. We find that the integrands corresponding to tree-level non-linear sigma model, Yang-Mills and $(DF)^2$ theory are determined by demanding enhanced UV scaling under BCFW shifts. Back in spacetime, we also find that $(DF)^2$ theory is fixed by gauge invariance/UV scaling and simple locality assumptions.

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Laurentiu Rodina. 2020-05-13. UV consistency conditions for CHY integrands. https://doi.org/10.1103/physrevd.102.045012

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