4 papers
Dynamical dark energy from Kretschmann scalar at low redshifts
A. B. Fernandes, S. H. Pereira, J. F. Jesus +1
In this work, we present a cosmological model in which the cosmological constant term is replaced by the Kretschmann scalar at the level of the action. In this way, it becomes poss…
Kinematic reconstruction of torsion as dark energy in Friedmann cosmology
A. M. Vicente, J. F. Jesus, S. H. Pereira
In this paper we study the effects of torsion of space-time in the expansion of the Universe as a candidate to dark energy. The analysis is done by reconstructing the torsion funct…
Can decaying vacuum solve the H_0 Tension?
L. S. Brito, J. F. Jesus, A. A. Escobal +1
In the present work we analyze two different models of interaction between dark energy and dark matter, also known as vacuum decay models or CDM models. In both models, when…
High-redshift cosmography with a possible cosmic distance duality relation violation
José F. Jesus, Mikael J. S. Gomes, Rodrigo F. L. Holanda +1
In this study, we used geometric distances at high redshifts (both luminosity and angular) to perform a cosmographic analysis with the Padé method, which stabilizes the behaviour…