Heidelberg 2022 – wissenschaftliches Programm

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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 2: Gravity, Amplitudes, AdS/CFT

MP 2.6: Vortrag

Montag, 21. März 2022, 18:15–18:35, MP-H5

Classical and quantum gravitational scattering with Generalized Wilson Lines — Domenico Bonocore, Anna Kulesza, and •Johannes Pirsch — Institut für Theoretische Physik, WWU Münster, Münster, Germany

The all-order structure of scattering amplitudes is greatly simplified using Wilson line operators, describing eikonal emissions from straight lines extending to infinity. A generalization at subleading powers in the eikonal expansion, known as Generalized Wilson Line (GWL), has been proposed some time ago, and has been applied both in QCD phenomenology and in the high energy limits of gravitational amplitudes. In this talk I discuss the construction of the gravitational GWL starting from first principles in the worldline formalism. This includes identifying the correct Hamiltonian, which leads to a simple correspondence between the soft expansion and the weak field expansion. The resulting path integral representation of the GWL makes it possible to isolate the relevant contributions to the classical limit.