11 citations · 29 across the 5 of their papers we have counts for
6 papers
Scaling solutions in three-form cosmology
Vitor da Fonseca, Bruno J. Barros, Tiago Barreiro +1
A hybrid three-form model of dark energy is developed in order to identify scaling solutions, a long-sought feature in three-form cosmology. Exploiting Hodge dualities, the theory…
Relaxing cosmological constraints on current neutrino masses
Vitor da Fonseca, Tiago Barreiro, Nelson J. Nunes
We show that a mass-varying neutrino model driven by scalar field dark energy relaxes the existing upper bound on the current neutrino mass to eV. We extend the…
Coupling quintessence kinetics to electromagnetism
Bruno J. Barros, Vitor da Fonseca
We propose a general model where quintessence couples to electromagnetism via its kinetic term. This novelty generalizes the linear dependence of the gauge kinetic function on ,…
Is there evidence for CIDER in the Universe?
Bruno J. Barros, Diogo Castelão, Vitor da Fonseca +3
In this work we analyze the full linear behaviour of the constrained interacting dark energy (CIDER) model, which is a conformally coupled quintessence model tailored to mimic a $Λ…
Fundamental Physics with ESPRESSO, Constraining a simple parametrisation for varying
Vitor da Fonseca, Tiago Barreiro, Nelson J. Nunes +24
The spectrograph ESPRESSO recently obtained a limit on the variation of the fine-structure constant, , through measurements along the line of sight of a bright quasar with a pre…
A simple parametrisation for coupled dark energy
Vitor da Fonseca, Tiago Barreiro, Nelson J. Nunes
As an alternative to the popular parametrisations of the dark energy equation of state, we construct a quintessence model where the scalar field has a linear dependence on the numb…