UV consistency conditions for Cachazo-He-Yuan integrands

Laurentiu Rodina (1)

1 IPHT - Institut de Physique Théorique - UMR CNRS 3681

We extend on-shell bootstrap methods from spacetime amplitudes to the world sheet objects of the Cachazo-He-Yuan formalism. We observe that the integrands corresponding to tree-level nonlinear sigma model, Yang-Mills and (DF)2 theory are determined by demanding enhanced UV scaling under Britto-Cachazo-Feng-Witten shifts. Back in spacetime, we also find that (DF)2 theory is fixed by gauge invariance/UV scaling and simple locality assumptions.

Mots clés: Formal aspects of field theory; field theory in curved space; sigma model: nonlinear; invariance: gauge; ultraviolet; scaling; tree approximation; Yang-Mills; bootstrap

Domaines: Physique des Hautes Energies - Théorie [hep-th]

Laurentiu Rodina. UV consistency conditions for Cachazo-He-Yuan integrands. Physical Review D, 2020, 102 (4), pp.045012. ⟨10.1103/PhysRevD.102.045012⟩. ⟨hal-02739950⟩