From the 1 of 5 linked papers with an AI index.
5 papers
Analytic backreaction of a scalar wig on a Schwarzschild black hole
Marco de Cesare, Manuel Del Piano, Carlos A. R. Herdeiro
The paper analytically computes how a massive scalar quasi‑bound state backreacts on a Schwarzschild black hole, deriving metric perturbations, horizon evolution, and the scalar’s…
Scalar field scattering in a Schwarzschild-de Sitter geometry
Marco de Cesare, Marcello Miranda, Achilleas P. Porfyriadis
We solve analytically the low-frequency s-wave dynamics of a massless scalar field propagating on a Schwarzschild-de Sitter black hole background. A rigorous application of the met…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
Connecting Gravitational Perturbations: from Bertotti-Robinson to Extreme Reissner-Nordstrom
Marco de Cesare, Roberto Oliveri, Achilleas P. Porfyriadis
We study spherically symmetric spacetime perturbations induced by a neutral scalar in the near-horizon region of extreme Reissner-Nordstrom black holes. For the unperturbed black h…
Arrows of time in bouncing cosmologies
Marco de Cesare
Different approaches to quantum gravity, such as loop quantum cosmology and group field theory, predict the resolution of the initial cosmological singularity via a bounce: a regul…