Search Results for author: Alessandro Melchiorri

Found 2 papers, 0 papers with code

2021-$H_0$ Odyssey: Closed, Phantom and Interacting Dark Energy Cosmologies

no code implementations8 Jan 2021 Weiqiang Yang, Supriya Pan, Eleonora Di Valentino, Olga Mena, Alessandro Melchiorri

Up-to-date cosmological data analyses have shown that \textit{(a)} a closed universe is preferred by the Planck data at more than $99\%$ CL, and \textit{(b)} interacting scenarios offer a very compelling solution to the Hubble constant tension.

Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology

Higher-Curvature Corrections and Tensor Modes

no code implementations1 Dec 2020 William Giarè, Fabrizio Renzi, Alessandro Melchiorri

Higher-curvature corrections to the effective gravitational action may leave signatures in the spectrum of primordial tensor perturbations if the inflationary energy scale is sufficiently high.

Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology

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