4 papers
A comparative study of emergent dark energy models
Andrés García-Rivera, A. Hernández-Almada, Miguel A. García-Aspeitia +1
Late (emergent) dark energy models that involve a hyperbolic tangent in their dynamic equations have achieved success due to their simplicity, the possibility of resolving the Hubb…
Late-Time Cosmic Acceleration from QCD Confinement Dynamics
Jonathan Rincón Saucedo, Humberto MartÃnez-Huerta, Adolfo Huet +2
We explore a phenomenological extension of the Polyakov-Nambu-Jona-Lasinio (PNJL) model by introducing a curvature-sensitive effective contribution to the Polyakov loop potential,…
DESI and fast radio burst used to constrain modified theories of gravity
J. A. Astorga-Moreno, Miguel A. GarcÃa-Aspeitia, A. Hernández-Almada +1
This paper is devoted to the study of the viability of DESI and the fast radio burst to constrain the free parameters of modified theories of gravity. Thus, we present a model supp…
On a model of variable curvature that mimics the observed Universe acceleration
A. Esteban-Gutiérrez, Miguel A. GarcÃa-Aspeitia, A. Hernández-Almada +2
We present a new model based on General Relativity in where a subtle change of curvature at late times is able to produce the observed Universe acceleration and an oscillating beha…