28 citations · 40 across the 3 of their papers we have counts for
3 papers
astro-ph.CO2018★ 5 cited
Modified gravity versus shear viscosity: imprints on the scalar matter perturbations
C. M. S. Barbosa, H. Velten, J. C. Fabris +1
Cosmological scalar perturbation theory studied in the Newtonian gauge depends on two potentials and . In General Relativity (GR) they must coincide () in the absence o…
astro-ph.CO2017★ 28 cited
Assessing the impact of bulk and shear viscosities on large scale structure formation
C. M. S. Barbosa, H. Velten, J. C. Fabris +1
It is analyzed the effects of both bulk and shear viscosities on the perturbations, relevant for structure formation in late time cosmology. It is shown that shear viscosity can be…
astro-ph.CO2015★ 7 cited
Viscous Cosmology
C. M. S. Barbosa, J. C. Fabris, O. F. Piattella +2
We discuss the possibility to implement a viscous cosmological model, attributing to the dark matter component a behaviour described by bulk viscosity. Since bulk viscosity implies…