77 citations · 969 across the 50 of their papers we have counts for
6 papers · 1 filter
From Hubble to Snap Parameters: A Gaussian Process Reconstruction
J. F. Jesus, D. Benndorf, S. H. Pereira +1
By using recent and SNe Ia data, we reconstruct the evolution of kinematic parameters , , jerk and snap, using a model-independent, non-parametric method, namely…
A pilot study on canonical gravity with mass dimension one fermions
R. de C. Lima, T. M. Guimarães, S. H. Pereira
The mass dimension one (MDO) fermionic field is built on a complete set of dual-helicity eigenspinors of the charge conjugation operator, which obeys the statistic of Fermi-Dirac.…
Testing a varying- model for dark energy within Co-varying Physical Couplings framework
R. R. Cuzinatto, R. P. Gupta, R. F. L. Holanda +2
The Co-varying Physical Couplings (CPC) framework is a modified gravity set up assuming Einstein Field Equations wherein the quantities are promoted to space-time funct…
Fermionic wave functions and Grassmann fields as possible sources of dark energy
L. C. T. Brito, S. H. Pereira, L. N. Barboza +2
We study a cosmological model with a fermionic field which can be interpreted as a source of dark energy in the universe. Two different approaches were considered, the first one wi…
Dark matter from torsion in Friedmann cosmology
S. H. Pereira, A. M. Vicente, J. F. Jesus +1
A cosmological model in an Einstein-Cartan framework endowed with torsion is studied. For a torsion function assumed to be proportional to Hubble expansion function, namely …
Observational constraints on varying fundamental constants in a minimal CPC model
R. R. Cuzinatto, R. F. L. Holanda, S. H. Pereira
A minimal model based on the Co-varying Physical Couplings (CPC) framework for gravity is proposed. The CPC framework is based on the assumptions of a metric-compatible four-dimens…