61 citations · 105 across the 5 of their papers we have counts for
5 papers
Forecast and analysis of the cosmological redshift drift
Ruth Lazkoz, Iker Leanizbarrutia, Vincenzo Salzano
The cosmological redshift drift could lead to the next step in high-precision cosmic geometric observations, becoming a direct and irrefutable test for cosmic acceleration. In orde…
Cosmological constraints on a unified dark matter-energy scalar field model with fast transition
Iker Leanizbarrutia, Alberto Rozas-Fernández, Ismael Tereno
We test the viability of a single fluid cosmological model containing a transition from a dark-matter-like regime to a dark-energy-like regime. The fluid is a k-essence scalar fiel…
Crossing SNe Ia and BAO observational constraints with local ones in hybrid metric-Palatini gravity
Iker Leanizbarrutia, Francisco S. N. Lobo, Diego Saez-Gomez
In this paper, we consider the recently proposed hybrid metric-Palatini gravitational theory, which consists of adding to the Einstein-Hilbert Lagrangian an term c…
Cosmological constrains on fast transition Unified Dark Energy/Matter models
Ruth Lazkoz, Iker Leanizbarrutia, Vincenzo Salzano
We explore the observational adequacy of a class of Unified Dark Energy/Matter (UDE/M) models with a fast transition. Our constraints are set using a combination of geometric probe…
Parametrizing the transition to the phantom epoch with Supernovae Ia and Standard Rulers
Iker Leanizbarrutia, Diego Sáez-Gómez
The reconstruction of a (non)canonical scalar field Lagrangian from the dark energy Equation of State (EoS) parameter is studied, where it is shown that any EoS parametrization can…