1 citations · 1 across the 4 of their papers we have counts for
5 papers
Circumventing the Ricci-inverse no-go theorem with complexifiable singularities: a novel dark energy model
Mattia Scomparin
Ricci-inverse gravity is a new type of fourth-order gravity theory based on the anti-curvature tensor, that is, the inverse of the Ricci tensor. In this context, we introduce a nov…
Cadabra and Python algorithms in General Relativity and Cosmology I: Generalities
Oscar Castillo-Felisola, Dominic T. Price, Mattia Scomparin
The aim of this work is to present a series of concrete examples which illustrate how the computer algebra system Cadabra can be used to manipulate expressions appearing in General…
New nonlocal constants and first integrals for nonlinear Jacobi-type equations
Mattia Scomparin
We prove a set of general theorems that provide new nonlocal constants and first integrals for nonlinear Jacobi-type ordinary differential equations. Applications include equations…
Nonlocal constants of motion in Lagrangian Dynamics of any order
Gianluca Gorni, Mattia Scomparin, Gaetano Zampieri
We describe a recipe to generate "nonlocal" constants of motion for ODE Lagrangian systems. As a sample application, we recall a nonlocal constant of motion for dissipative mechani…
Damping of cosmological tensor modes in Horndeski theories after GW170817
Mattia Scomparin, Simone Vazzoler
This paper investigates the propagation of cosmological gravitational waves interacting with free-streaming neutrinos within the context of Horndeski theories of gravity constraine…