March 30, 2021 to April 1, 2021
Institut Henri Poincaré
Europe/Paris timezone

Schwarzschild-Tangherlini metric from scattering amplitudes in various dimensions

Mar 30, 2021, 10:00 AM
15m

Speaker

Stavros Mougiakakos (IPhT,CEA-Saclay)

Description

We derive the static Schwarzschild-Tangherlini metric by extracting the classical contributions from the multiloop vertex functions of a graviton emitted from a massive scalar field. At each loop order the classical contribution is proportional to a unique master integral given by the massless sunset integral. By computing the scattering amplitudes up to three-loop order in general dimension, we explicitly derive the expansion of the metric up to the fourth post-Minkowskian order O(GN4) in four, five and six dimensions. There are ultraviolet divergences that are cancelled with the introduction of higher-derivative nonminimal couplings. The standard Schwarzschild-Tangherlini is recovered by absorbing their effects by an appropriate coordinate transformation induced from the de Donder gauge condition.

Primary author

Stavros Mougiakakos (IPhT,CEA-Saclay)

Co-author

Presentation materials