From the 2 of 6 linked papers with an AI index.
6 papers
The radial action for massive particles in spherically symmetric geometries: Exact resummation at any PM order
Donato Bini, Giorgio Di Russo
The paper derives exact, resummed expressions for the radial action of massive particles on hyperbolic-like geodesics in various spherically symmetric spacetimes, linking the resul…
5d Schwarzschild-Tangherlini spacetime: MST-like formalism for a Reduced Confluent Heun Equation
Donato Bini, Giorgio Di Russo, Veronica Fantini
The paper studies the five‑dimensional Schwarzschild‑Tangherlini black hole, analyzing its geodesic scattering, Lyapunov exponents for circular orbits, and massless scalar perturba…
Gravitational waveform from radial infall at the third-and-half Post-Newtonian order
Giorgio Di Russo, Donato Bini
We compute the gravitational waveform associated with a radially infalling particle in a Schwarzschild black hole working in the center-of-mass system and in a post-Newtonian (PN)…
Radial fall: the gravitational waveform up to the second-and-half Post-Newtonian order
Donato Bini, Giorgio Di Russo
We consider an application of the Multipolar Post Minkowskian formalism to the case of a two-body system in radial fall. We compute, within the post-Newtonian approximation, the as…
Resumming Post-Minkowskian and Post-Newtonian gravitational waveform expansions
Andrea Cipriani, Giorgio Di Russo, Francesco Fucito +3
We derive formulae that resum, at a given order in the soft limit, the infinite series of Post-Minkowskian (small gravitational coupling) or Post-Newtonian (small velocities) corre…
Hamiltonian Neural Networks approach to fuzzball geodesics
Andrea Cipriani, Alessandro De Santis, Giorgio Di Russo +2
The recent increase in computational resources and data availability has led to a significant rise in the use of Machine Learning (ML) techniques for data analysis in physics. Howe…