2022/10/16 by Giacomo Brunello, Brunello, Giacomo · 1 citation
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th) #Relativity and Gravitational Theory
paper · pdf · doi:10.48550/arxiv.2211.01321
openalex publication_date 2022/10/16 · openalex created_date 2022/11/08 · openalex updated_date 2026/07/28
In this thesis we elaborate on two different aspects of the Effective Field Theory (EFT) approach to a Binary Coalescing system in General Relativity (GR). First, we consider the issue of hereditary effects in the Post-Newtonian (PN) perturbative scheme, and we compute hereditary diagrams in the far zone region up to 5PN order, using both Feynman and Schwinger-Keldysh formalism, comparing our results with those appearing in literature. Then, we focus on the Post-Minkowskian (PM) perturbative scheme, and we compute the bending angle of a massless scalar field under the influence of a massive scalar in the EFT of GR, up to one loop order in dimensional regularisation. Our analysis points to the existence of relevant terms that were not accounted for in previous study, which may modify the predictions for physical observables.