167 citations · 448 across the 34 of their papers we have counts for
34 papers
Is bouncing easier with a negative effective dark fluid density ?
Stéphane Fay
Assuming that a cosmological model can describe the whole Universe history, we look for the conditions of a cosmological bounce thus in agreement with late time observations. Our a…
periodic cosmology
Stephane Fay
We examine the possibility that Universe expansion be made of some expansions repeating periodically, separated by some inflation and radiation dominated phases. This so-cal…
Phase space of static wormholes sustained by an isotropic perfect fluid
Stephane Fay
A phase space is built that allows to study, classify and compare easily large classes of static spherically symmetric wormholes solutions, sustained by an isotropic perfect fluid…
Constraints from growth-rate data on some coupled dark energy models mimicking a expansion
Stephane Fay
The expansion could be mimicked by a dark energy coupled to matter. Then, the equation of state and coupling of this coupled dark energy could not be const…
An easy journey from Galilean to General Relativity
Stephane Fay
We explain in a very concise way the basic principles that lead from Galilean to General Relativity to make them understandable to students or general audience, even with little kn…
A coupled vacuum energy model producing endless alternated phases of accelerated and decelerated expansion
Stephane Fay
We consider a flat Universe filled with a vacuum energy coupled to matter and radiation by respectively positive coupling functions and . We require that these functions…