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Mimetic gravity: a review of recent developments and applications to cosmology and astrophysics
L. Sebastiani, S. Vagnozzi, R. Myrzakulov
Mimetic gravity is a Weyl-symmetric extension of General Relativity, related to the latter by a singular disformal transformation, wherein the appearance of a dust-like perfect flu…
Impact of neutrino properties on the estimation of inflationary parameters from current and future observations
Martina Gerbino, Katherine Freese, Sunny Vagnozzi +4
We study the impact of assumptions about neutrino properties on the estimation of inflationary parameters from cosmological data, with a specific focus on the allowed contours in t…
On the improvement of cosmological neutrino mass bounds
Elena Giusarma, Martina Gerbino, Olga Mena +3
The most recent measurements of the temperature and low-multipole polarization anisotropies of the Cosmic Microwave Background (CMB) from the Planck satellite, when combined with g…
Solar models in light of new high metallicity measurements from solar wind data
Sunny Vagnozzi, Katherine Freese, Thomas H. Zurbuchen
We study the impact of new metallicity measurements, from solar wind data, on the solar model. The "solar modelling problem" refers to the persisting discrepancy between helioseism…
Solving the small-scale structure puzzles with dissipative dark matter
Robert Foot, Sunny Vagnozzi
Small-scale structure is studied in the context of dissipative dark matter, arising for instance in models with a hidden unbroken Abelian sector, so that dark matter couples to a m…
Covariant Horava-like and mimetic Horndeski gravity: cosmological solutions and perturbations
Guido Cognola, Ratbay Myrzakulov, Lorenzo Sebastiani +2
We consider a variant of the Nojiri-Odintsov covariant Horava-like gravitational model, where diffeomorphism invariance is broken dynamically via a non-standard coupling to a perfe…