Reverse Bootstrapping: IR lessons for UV physics

TL;DR

This paper explores how low-energy scattering data in the Standard Model can inform constraints on the ultraviolet behavior of gravitational interactions, linking IR physics to UV completions.

Contribution

It introduces a novel approach using IR scattering processes to derive constraints on UV gravitational amplitudes, bridging IR and UV physics.

Findings

Low-energy graviton-photon scattering constrains UV gravity models

IR positivity bounds inform UV gravitational amplitude behavior

New connections between IR scattering data and UV physics established

Abstract

S-matrix bootstrap and positivity bounds are usually viewed as constraints on low-energy theories imposed by the requirement of a standard UV completion. By considering graviton--photon scattering in the Standard Model, we argue that the low-energy theory can be used to put constraints on the UV behaviour of the gravitational scattering amplitudes.