3 papers
astro-ph.CO2025
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.…
astro-ph.CO2024
Impact of DESI BAO Data on Inflationary Parameters: stability against late-time new physics
Simony Santos da Costa
In this work, I investigate the impact of Dark Energy Spectroscopic Instrument (DESI) Baryonic Acoustic Oscillations (BAO) data on cosmological parameters, focusing on the inflatio…
gr-qc2024
Gauge invariant quantum backreaction in U(1) axion inflation
Davide Campanella Galanti, Pietro Conzinu, Giovanni Marozzi +1
We evaluate the quantum backreaction due to a gauge field coupled to a pseudo-scalar field driving a slow-roll inflationary stage, the so-called axion inflation. The backreaction i…