Abstract Models where dark matter and dark energy interact with each other have been
proposed to solve the coincidence problem. We review the motivations underlying the need …

The result presented by the BOSS-SDSS Collaboration measuring the baryon acoustic
oscillations of the Lyman-alpha forest from high-redshift quasars indicates a 2.5 σ departure …

Holographic dark energy with the Hubble radius as infrared cutoff has been considered as a
candidate to explain the late-time cosmic acceleration and it can solve the coincidence …

In this paper we investigate a time-varying neutrino mass model, motivated by the mild
tension between cosmic microwave background (CMB) measurements of the matter …

In this paper we introduce the fractional dark energy model, in which the accelerated
expansion of the Universe is driven by a nonrelativistic gas (composed by either fermions or …

A cosmic scenario with gravitationally induced particle creation is proposed. In this model
the Universe evolves from an early to a late time de Sitter era, with the recent accelerating …

We analyze the coupled quintessence in the light of the linear dynamical systems theory,
with two different interactions:(1) proportional to the energy density of the dark energy and …

The fractional dark energy (FDE) model describes the accelerated expansion of the
Universe through a nonrelativistic gas of particles with a noncanonical kinetic term. This term …

We build a model of metastable dark energy, in which the observed vacuum energy is the
value of the scalar potential at the false vacuum. The scalar potential is given by a sum of …

We present the dynamical analysis for interacting quintessence, considering linear
cosmological perturbations. Matter perturbations improve the background analysis and …