299 citations · 2.2k across the 54 of their papers we have counts for
15 papers · 1 filter
Inflation in non-local hybrid metric-Palatini gravity
Flavio Bombacigno, Mariaveronica De Angelis, Carsten van de Bruck +1
Within the framework of hybrid metric-Palatini gravity, we incorporate non-localities introduced via the inverse of the d'Alembert operators acting on the scalar curvature. We anal…
Planck-PR4 anisotropy spectra show (better) consistency with General Relativity
Enrico Specogna, William Giarè, Eleonora Di Valentino
We present the results from a series of analyses on two parametric tests of gravity that modify the growth of linear, sub-horizon matter perturbations in the CDM model. The firs…
Dynamical Dark Energy Beyond Planck? Constraints from multiple CMB probes, DESI BAO and Type-Ia Supernovae
William Giarè
The latest Baryon Acoustic Oscillation (BAO) measurements from the Dark Energy Spectroscopic Instrument (DESI) collaboration, when combined with Planck satellite Cosmic Microwave B…
Quantifying the tension and evidence for interacting dark energy from redshift-space distortion measurements
Miguel A. Sabogal, Emanuelly Silva, Rafael C. Nunes +3
In recent years, Cosmic Microwave Background (CMB) observations, Weak Lensing surveys, and measurements from Redshift-Space Distortions (RSD) have revealed a significant…
Neutrino cosmology after DESI: tightest mass upper limits, preference for the normal ordering, and tension with terrestrial observations
Jun-Qian Jiang, William Giarè, Stefano Gariazzo +6
The recent DESI Baryon Acoustic Oscillation measurements have led to tight upper limits on the neutrino mass sum, potentially in tension with oscillation constraints requiring $\su…
Robust Preference for Dynamical Dark Energy in DESI BAO and SN Measurements
William Giarè, Mahdi Najafi, Supriya Pan +2
Recent Baryon Acoustic Oscillation (BAO) measurements released by DESI, when combined with Cosmic Microwave Background (CMB) data from Planck and two different samples of Type Ia s…
Combining pre- and post-recombination new physics to address cosmological tensions: case study with varying electron mass and sign-switching cosmological constant
Yo Toda, William Giarè, Emre Özülker +2
It has recently been argued that the Hubble tension may call for a combination of both pre- and post-recombination new physics. Motivated by these considerations, we provide one of…
Model-Independent Test of Prerecombination New Physics: Measuring the Sound Horizon with Gravitational Wave Standard Sirens and the Baryon Acoustic Oscillation Angular Scale
William Giarè, Jonathan Betts, Carsten van de Bruck +1
In a broad class of cosmological models where spacetime is described by a pseudo-Riemannian manifold, photons propagate along null geodesics, and their number is conserved, upcomin…
Interacting Dark Energy after DESI Baryon Acoustic Oscillation measurements
William Giarè, Miguel A. Sabogal, Rafael C. Nunes +1
We investigate the implications of the Baryon Acoustic Oscillations measurement released by the Dark Energy Spectroscopic Instrument (DESI) for Interacting Dark Energy (IDE) models…
Inflation, the Hubble Tension and Early Dark Energy: an alternative overview
William Giarè
I review and discuss the possible implications for inflation resulting from considering new physics in light of the Hubble tension. My study is motivated by a simple argument that…
How robust are the parameter constraints extending the CDM model?
Stefano Gariazzo, William Giarè, Olga Mena +1
We present model-marginalized limits on the six standard CDM cosmological parameters (, , , , and ), as well a…
Tightening the reins on non-minimal dark sector physics: Interacting Dark Energy with dynamical and non-dynamical equation of state
William Giarè, Yuejia Zhai, Supriya Pan +3
We present a comprehensive reassessment of the state of Interacting Dark Energy (IDE) cosmology, namely models featuring a non-gravitational interaction between Dark Matter (DM) an…
Testing scale-invariant inflation against cosmological data
Chiara Cecchini, Mariaveronica De Angelis, William Giarè +2
There is solid theoretical and observational motivation behind the idea of scale-invariance as a fundamental symmetry of Nature. We consider a recently proposed classically scale-i…
Gravitational waves in a cyclic Universe: resilience through cycles and vacuum state
Mariaveronica De Angelis, Adam Smith, William Giarè +1
We present a generalised calculation for the spectrum of primordial tensor perturbations in a cyclic Universe, making no assumptions about the vacuum state of the theory and accoun…
Testing -attractor quintessential inflation against CMB and low-redshift data
William Giarè, Eleonora Di Valentino, Eric V. Linder +1
Due to universality and attractor properties, -attractor quintessential inflation establishes direct relations between inflationary observables such as the scalar tilt and…