331 citations · 2.1k across the 38 of their papers we have counts for
6 papers · 1 filter
Early modified gravity in light of the tension and LSS data
Matteo Braglia, Mario Ballardini, Fabio Finelli +1
We present a model of Early Modified Gravity (EMG) consisting in a scalar field with a non-minimal coupling to the Ricci curvature of the type plus a cosmol…
Unified framework for Early Dark Energy from -attractors
Matteo Braglia, William T. Emond, Fabio Finelli +2
One of the most appealing approaches to ease the Hubble tension is the inclusion of an early dark energy (EDE) component that adds energy to the Universe in a narrow redshift windo…
Generating PBHs and small-scale GWs in two-field models of inflation
Matteo Braglia, Dhiraj Kumar Hazra, Fabio Finelli +3
Primordial black holes (PBHs) generated by gravitational collapse of large primordial overdensities can be a fraction of the observed dark matter. In this paper, we introduce a mec…
Scalar-tensor theories of gravity, neutrino physics, and the tension
Mario Ballardini, Matteo Braglia, Fabio Finelli +3
We use 2018 data to constrain the simplest models of scalar-tensor theories characterized by a coupling to the Ricci scalar of the type with $F(σ) = N_{pl}^2 + ξσ…
A larger value for by an evolving gravitational constant
Matteo Braglia, Mario Ballardini, William T. Emond +4
We provide further evidence that a massless cosmological scalar field with a non-minimal coupling to the Ricci curvature of the type alleviates…
Generating primordial features at large scales in two field models of inflation
Matteo Braglia, Dhiraj Kumar Hazra, L. Sriramkumar +1
We investigate the generation of features at large scales in the primordial power spectrum (PPS) when inflation is driven by two scalar fields. In canonical single field models of…