837 citations · 3.1k across the 24 of their papers we have counts for
15 papers · 1 filter
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…
Testing -Free f(Q) Cosmology
José Ferreira, Tiago Barreiro, José P. Mimoso +1
We study a model of Symmetric Teleparallel gravity that is able to account for the current accelerated expansion of the universe without the need for dark energy component. We inve…
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…
Cosmology with the Laser Interferometer Space Antenna
Pierre Auclair, David Bacon, Tessa Baker +177
The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravita…
Simple parametrisation for coupled dark energy
Vitor da Fonseca, Tiago Barreiro, Nelson J. Nunes
We propose a phenomenological generalisation of the standard model with only one extra degree of freedom that parametrises the evolution of a scalar field responsible for the cosmi…
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…
Forecasting F(Q) cosmology with CDM background using standard sirens
José Ferreira, Tiago Barreiro, José Mimoso +1
Forecast constraints for a Symmetric Teleparallel Gravity model with a CDM background are made using forthcoming ground and space based gravitational waves observatories. A Baye…
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…
Spherical collapse in coupled quintessence with a CDM background
Bruno J. Barros, Tiago Barreiro, Nelson J. Nunes
In this work we study the growth of cold dark matter density perturbations in the nonlinear regime on a conformally coupled quintessence model in which the background is designed t…
Coupled quintessence with a CDM background: removing the tension
Bruno J. Barros, Luca Amendola, Tiago Barreiro +1
A well-known problem of the CDM model is the tension between the relatively high level of clustering, as quantified by the parameter , found in cosmic microwave background…
Unveiling the Dynamics of the Universe
Pedro Avelino, Tiago Barreiro, C. Sofia Carvalho +10
We explore the dynamics and evolution of the Universe at early and late times, focusing on both dark energy and extended gravity models and their astrophysical and cosmological con…
Assisted coupled quintessence
Luca Amendola, Tiago Barreiro, Nelson J. Nunes
We study models of quintessence consisting of a number of scalar fields coupled to several dark matter components. In the case of exponential potentials the scaling solutions can b…
Interacting dark energy collapse with matter components separation
Morgan Le Delliou, Tiago Barreiro
We use the spherical collapse model of structure formation to investigate the separation in the collapse of uncoupled matter (essentially baryons) and coupled dark matter in an int…
Gamma-Ray Bursts and Dark Energy - Dark Matter interaction
T. Barreiro, O. Bertolami, P. Torres
In this work Gamma Ray Burst (GRB) data is used to place constraints on a putative coupling between dark energy and dark matter. Type Ia supernovae (SNe Ia) constraints from the Sl…