299 citations · 342 across the 9 of their papers we have counts for
10 papers
Viscous matter in modified -gravity: Hubble tension attenuation with DESI and SH0ES data
Elisa Fazzari, Nakia Carlevaro, Giovanni Montani
We study the late-time dynamics of the Universe in a modified metric gravity model formulated in the Jordan frame. The standard CDM model is additionally deformed to incl…
Exploring Hu-Sawicki-like modified gravity with Genetic Algorithms
Chiara De Leo, Elisa Fazzari, Matteo Martinelli +1
We investigate whether viable Hu-Sawicki-like models can produce deviations from that can be tested against current background cosmological data. We adopt a…
On the Metric gravity Viability in Accounting for the Binned Supernovae Data
A. Valletta, G. Montani, M. G. Dainotti +1
In this work, two models of metric gravity in the Jordan frame are investigated as a dynamical description of the late-time cosmic expansion using binned Type Ia Supernovae…
Creation of Viscous Dark Energy by the Hubble Flow: Comparison with SNe Ia Master Sample Binned Data
Iolanda Navone, Maria Giovanna Dainotti, Elisa Fazzari +3
We study a family of cosmological models featuring dynamical dark energy (DE), based on the idea that the creation of its constituents arises from the gravitational field of the ex…
Cosmographic Footprints of Dynamical Dark Energy
Elisa Fazzari, William Giarè, Eleonora Di Valentino
We introduce a novel cosmographic framework to trace the late-time kinematics of the Universe without assuming any underlying dynamics. The method relies on generalized Padé-$(2,1)…
Two Dynamical Scenarios for Binned Master Sample Interpretation
Giovanni Montani, Elisa Fazzari, Nakia Carlevaro +1
We analyze two different scenarios for the late Universe dynamics, resulting into Hubble parameters deviating from the CDM, mainly for the presence of an additional free paramet…
Investigating -Inflation: background evolution and constraints
Elisa Fazzari, Chiara De Leo, Giovanni Montani +3
In this work, we investigate the possibility of generating an inflationary mechanism within the framework of a metric- modified gravity theory, formulated in the Jordan frame…
The effective running Hubble constant in SNe Ia as a marker for the dark energy nature
E. Fazzari, M. G. Dainotti, G. Montani +1
We propose a new method that reveal the nature of dark energy (DE) evolution. Specifically, the method consists of studying the evolving trend regarding the effective running Hubbl…
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.…
Running Einstein Constant and a Possible Vacuum State of the Universe
Giovanni Montani, Giulia Maniccia, Elisa Fazzari +1
We propose a revised formulation of General Relativity for cosmological settings, in which the Einstein constant varies with the energy density of the Universe. We demonstrate that…