45 citations · 91 across the 4 of their papers we have counts for
4 papers
Unphysical properties in a class of interacting dark energy models
R. von Marttens, H. A. Borges, S. Carneiro +2
Models with non-gravitational interactions between the dark matter and dark energy components are an alternative to the standard cosmological scenario. These models are characteriz…
Observational tests of non-adiabatic Chaplygin gas
S. Carneiro, C. Pigozzo
In a previous paper it was shown that any dark sector model can be mapped into a non-adiabatic fluid formed by two interacting components, one with zero pressure and the other with…
A Godel-Friedman cosmology?
Saulo Carneiro
Based on the mathematical similarity between the Friedman open metric and Godel's metric in the case of nearby distances, we investigate a new scenario for the Universe's evolution…
The static spacetime relative acceleration for the general free fall and its possible experimental test
F. Bunchaft, S. Carneiro
Mishra has recently established, using a generic static metric, the relative local proper-time 3-acceleration of a test-particle in one-dimensional free fall relative to a static r…