Gießen 2024 – scientific programme

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SYMD: SMuK Dissertation Prize 2024

SYMD 1: SMuK Dissertation Prize 2024

SYMD 1.3: Invited Talk

Monday, March 11, 2024, 15:15–15:45, HBR 14: HS 1

Gravitational Scattering of Compact Bodies from Worldline Quantum Field Theory — •Gustav Jakobsen — Institut für Physik und IRIS Adlershof, Humboldt Universität zu Berlin, Zum Großen Windkanal 2, 12489 Berlin, Germany — Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Am Mühlenberg 1, 14476 Potsdam, Germany

In this talk, I will present the recently introduced worldline quantum field theory for computing observables of the classical general relativistic two-body system. Here, spinning, compact bodies such as black holes or neutron stars are described in an effective field theory setting by point-like particles and computations are carried out diagrammatically with Feynman diagrams. The resulting loop integrals are handled with advanced integration techniques of quantum field theory. I will present state of the art results in the post-Minkowskian including recent extensions of the work in my PhD thesis. An essential motivation for this work is its application to predictions of gravitational waves from bound systems and I will explain how the post-Minkowskian scattering results can be mapped to bound motion where they may improve current waveform models.

Keywords: Quantum Field Theory; General Relativity; Black Holes; Loop Integration; Scattering