16 citations · 23 across the 9 of their papers we have counts for
6 papers · 1 filter
Gravitational waves from two scalar fields unifying the dark sector with inflation
Orlando Luongo, Tommaso Mengoni, Paulo M. Sá
We investigate the gravitational-wave background predicted by a two-scalar-field cosmological model that aims to unify primordial inflation with the dark sector, namely late-time d…
Cosmological phase-space analysis of -theories of gravity
Giannis Papagiannopoulos, Orlando Luongo, Genly Leon +1
The impact of topological terms that modify the Hilbert-Einstein action is here explored by virtue of a further contribution. In particular, we investigate the phase-space s…
Stability analysis of dilaton-inspired scalar field within the geometrical trinity of gravity
Youri Carloni, Orlando Luongo, Andronikos Paliathanasis
We investigate the dynamics of the dilaton-inspired scalar field, formally rewritten by means of a Brans-Dicke Lagrangian, within the framework of \emph{geometrical trinity of grav…
Phase-space analysis of dark energy models in non-minimally coupled theories of gravity
Youri Carloni, Orlando Luongo
We analyze scalar field dark energy models minimally and non-minimally coupled to gravity, postulating that a Yukawa-like interacting term is \emph{in form} equivalent for general…
Phase-space analysis in non-minimal symmetric-teleparallel dark energy
Youri Carloni, Orlando Luongo
We modify the symmetric-teleparallel dark energy through the addition of a further Yukawa-like term, in which the non-metricity scalar, , is non-minimally coupled to a scalar fi…
Quasi-quintessence inflation with non-minimal coupling to curvature in the Jordan and Einstein frames
Orlando Luongo, Tommaso Mengoni
We here explore a specific class of scalar field, dubbed quasi-quintessence which exhibits characteristics akin to ordinary matter. Specifically, we investigate under which conditi…