37 citations · 183 across the 15 of their papers we have counts for
5 papers · 1 filter
Fractional dark energy: phantom behavior and negative absolute temperature
Ricardo G. Landim
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 is…
Cosmological perturbations and dynamical analysis for interacting quintessence
Ricardo G. Landim
We present the dynamical analysis for interacting quintessence, considering linear cosmological perturbations. Matter perturbations improve the background analysis and viable criti…
Cosmic Transients, Einstein's Equivalence Principle and Dark Matter Halos
Orfeu Bertolami, Ricardo G. Landim
Cosmic transients, such as gamma-ray bursts and fast radio bursts, have been used to constrain the Einstein's Equivalence Principle (EEP) through the parametrized-post-Newtonian (P…
Dark Sector Cosmology
Ricardo C. G. Landim
The dark side of the universe is mysterious and its nature is still unknown. In fact, this poses perhaps as the biggest challenge in the modern cosmology. The two components of the…
Coupled quintessence and the impossibility of an interaction: a dynamical analysis study
Fabrizio F. Bernardi, Ricardo G. Landim
We analyze the coupled quintessence in the light of the linear dynamical systems theory, with two different interactions: i) proportional to the energy density of the dark energy a…