5 papers
Can cosmic voids ease the Hubble tension? Local expansion in CDM
Tommaso Moretti, Noemi Frusciante, Giovanni Verza
We investigate the effect of local cosmic voids on low-redshift measurements of the Hubble rate in flat CDM cosmologies. Using a hydrodynamical model for isolated spherical…
How deep can a cosmic void be? Voids-informed theoretical bounds in Galileon gravity
Tommaso Moretti, Noemi Frusciante, Giovanni Verza +1
We establish a void-based consistency test for Galileon scalar-tensor theories. We show that the previously reported unphysical breakdown of the predicted Newtonian force in certai…
Cosmic voids evolution in modified gravity via hydrodynamics
Tommaso Moretti, Noemi Frusciante, Giovanni Verza +1
We present a hydrodynamical description of isolated spherical voids in modified gravity (MG), extending the standard General Relativity (GR) and dynamical dark energy treatment by…
A spherical hydrodynamical model of cosmic voids in ÎCDM and beyond
Tommaso Moretti, Giovanni Verza, Noemi Frusciante +1
Cosmic voids have emerged as powerful probes for cosmology, providing complementary information on the large-scale structure of the universe. We present the first application of a…
Breaking parity: the case of the trispectrum from chiral scalar-tensor theories of gravity
Tommaso Moretti, Nicola Bartolo, Alessandro Greco
Recently, possible hints of parity violation have been observed in the connected galaxy four-point correlation function. Although the true origin of the signal from the analysis ha…