UV cancellations in gravity loop integrands

UV cancellations in gravity loop integrands

Blog Article

Abstract In this work we explore the properties of four-dimensional gravity integrands at large loop momenta.This analysis can not be done directly for the full off-shell integrand but only becomes well-defined on cuts that allow us to unambiguously specify labels for the loop variables.The Hoodies ultraviolet region of scattering amplitudes originates from poles at infinity Mountaineering - Accessoires - Fixations of the loop integrands and we show that in gravity these integrands conceal a number of surprising features.In particular, certain poles at infinity are absent which requires a conspiracy between individual Feynman integrals contributing to the amplitude.We suspect that this non-trivial behavior is a consequence of yet-to-be found symmetry or a hidden property of gravity amplitudes.