18 papers
QCD CP-violation scenario for a revised cosmological dynamics: analysis of the binned Pantheon Sample of Super Novae Ia
Giovanni Montani, Nakia Carlevaro, Maria Giovanna Dainotti +1
We investigate a modified cosmological dynamics in which the Universe is composed of baryonic matter and a complex (classical) scalar field. The phase component of this field is id…
Interpretation of the binned SNe Ia Master Sample data via a scalar quintessence component: phantom transition?
Giovanni Montani, Iolanda Navone, Maria Giovanna Dainotti +1
We study a modified cosmological scenario for the late Universe, involving an evolutionary dark energy model associated with the dynamics of a self-interacting scalar field in a po…
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…
Analysis of non-diffusive avalanche transport of energetic particles
Nakia Carlevaro, Matteo V. Falessi, Giovanni Montani +1
The dynamics of energetic particles (EPs) interacting with Alfvén eigenmodes (AEs) for the ITER 15MA baseline scenario was described using a reduced 1D model in [Carlevaro et al.…
Modifying CDM dynamics via out-of-equilibrium axions: reconciling SH0ES and DESI values
Giovanni Montani, Luis A. Escamilla, Nakia Carlevaro +1
We investigate late-Universe dynamics in which the dark matter component is described by axion particles. The proposed framework departs from the standard CDM paradigm due to a…
Revisiting the Matter Creation Process: Observational Constraints on Gravitationally Induced Dark Energy and the Hubble Tension
Tiziano Schiavone, Mariaveronica De Angelis, Luis A. Escamilla +2
The Hubble tension and the unknown origin of dark energy motivate the exploration of alternative mechanisms for late-time cosmic acceleration. We investigate gravitationally induce…