248 citations · 1.1k across the 40 of their papers we have counts for
4 papers · 1 filter
Metastable dark energy
Ricardo G. Landim, Elcio Abdalla
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…
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…
Analytic study of the effect of dark energy-dark matter interaction on the growth of structures
Rafael J. F. Marcondes, Ricardo C. G. Landim, André A. Costa +2
Large-scale structure has been shown as a promising cosmic probe for distinguishing and constraining dark energy models. Using the growth index parametrization, we obtain an analyt…
Dynamical analysis for a vector-like dark energy
Ricardo C. G. Landim
In this paper we perform a dynamical analysis for a vector field as a candidate for the dark energy, in the presence of a barothropic fluid. The vector is one component of the so-c…