115 citations
- Centre National de la Recherche ScientifiqueFR5 papers
- CEA Paris-SaclayFR3 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR3 papers
- Institut de Recherche sur les Lois Fondamentales de l'UniversFR3 papers
- Laboratoire AstroParticule et CosmologieFR3 papers
- Max Planck Institute for Extraterrestrial PhysicsDE3 papers
- Institut d'Astrophysique de ParisFR2 papers
- Observatoire de ParisFR2 papers
- UniverscienceFR2 papers
- University of California, Los AngelesUS2 papers
- East China Normal UniversityCN1 paper
- École Normale Supérieure Paris-SaclayFR1 paper
6 papers · 1 filter
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…
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…
Ten scenarios from early radiation to late time acceleration with a minimally coupled dark energy
Stephane Fay
We consider General Relativity with matter, radiation and a minimally coupled dark energy defined by an equation of state w. Using dynamical system method, we find the equilibrium…
From inflation to late time acceleration with a decaying vacuum coupled to radiation or matter
Stéphane Fay
We consider General Relativity with matter and radiation, one of these fluids being coupled to vacuum. We find that Universe dynamics starts by an inflation phase if the coupled fl…