Publications (8)
Constraining UV freeze-in of light relics with current and next-generation CMB observations
Luca Caloni, Patrick Stengel, Massimiliano Lattanzi +1
Cosmological observations allow to measure the abundance of light relics produced in the early Universe. Most studies focus on the thermal freeze-out scenario, yet light relics pro…
Tensor non-Gaussianity in chiral scalar-tensor theories of gravity
Nicola Bartolo, Luca Caloni, Giorgio Orlando +1
Violation of parity symmetry in the gravitational sector, which manifests into unequal left and right circular polarization states of primordial gravitational waves, represents a w…
Updated cosmological constraints on Macroscopic Dark Matter
Luca Caloni, Martina Gerbino, Massimiliano Lattanzi
We revise the cosmological phenomenology of Macroscopic Dark Matter (MDM) candidates, also commonly dubbed as Macros. A possible signature of MDM is the capture of baryons from the…
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.…
Novel cosmological bounds on thermally-produced axion-like particles
Luca Caloni, Martina Gerbino, Massimiliano Lattanzi +1
We constrain the coupling of thermally-produced axion-like particles (here axions) with photons and gluons, using data from the cosmic microwave background (CMB) spectra and baryon…
Cosmic strings and domain walls: the impact of CMB -mode data
Luca Caloni, Ricardo Z. Ferreira, Lara Sousa +1
We analyse CMB constraints on stable networks of cosmic strings and domain walls using for the first time full Planck 2018 data together with BICEP/Keck 2018 -mode measurements.…
Beyond thermal approximations: Precise cosmological bounds on Axion-Like Particles
Nicola Barbieri, Luca Caloni, Martina Gerbino +2
We derive updated cosmological bounds on light axion-like particles (ALPs) coupled to leptons or photons, using a full phase-space treatment of their production from the primordial…
Probing Lorentz-violating electrodynamics with CMB polarization
Luca Caloni, Serena Giardiello, Margherita Lembo +4
We perform a comprehensive study of the signatures of Lorentz violation in electrodynamics on the Cosmic Microwave Background (CMB) anisotropies. In the framework of the minimal St…