2024/11/22 by Benjamin Leather, Leather, Benjamin · 2 voices · 7 citations
Medicine · Physics and Astronomy · #Biofield Effects and Biophysics #Classical mechanics #Computer graphics (images) #Computer science #Experimental and Theoretical Physics Studies #Gravitation #Gravitational force #Physics #Relativity and Gravitational Theory #Slicing
paper · pdf · doi:10.48550/arxiv.2411.14976
published in arXiv (Cornell University) (Cornell University)
openalex publication_date 2024/11/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present a novel approach for calculating the gravitational self-force (GSF) in the Lorenz gauge, employing hyperboloidal slicing and spectral methods. Our method builds on the previous work that applied hyperboloidal surfaces and spectral approaches to scalar-field toy model [Phys. Rev. D 105, 104033 (2022)], extending them to handle gravitational perturbations. Focusing on first-order metric perturbations, we address the construction of the hyperboloidal foliation, detailing the minimal gauge choice. The Lorenz gauge is adopted to facilitate well-understood regularisation procedures, which are essential for obtaining physically meaningful GSF results. We calculate of the Lorenz gauge metric perturbation via a (known) gauge transformation from the Regge-Wheeler gauge. Our approach yields a robust framework for obtaining the metric perturbation components needed to calculate key physical quantities, such as radiative fluxes, the Detweiler redshift, and self-force corrections. Furthermore, the compactified hyperboloidal approach allows us to efficiently calculate the metric perturbation throughout the entire spacetime. This work thus establishes a foundational methodology for future second-order GSF calculations within this gauge, offering computational efficiencies through spectral methods.