110 citations · 655 across the 28 of their papers we have counts for
7 papers · 1 filter
Gravitational Matter Creation, Multi-fluid Cosmology and Kinetic Theory
S. R. G. Trevisani, J. A. S. Lima
A macroscopic and kinetic relativistic description for a decoupled multi-fluid cosmology endowed with gravitationally induced particle production of all components is proposed. The…
Can the Universe decelerate in the future?
A. A. Escobal, J. F. Jesus, S. H. Pereira +1
The possibility of an expanding decelerating Universe in the distant future is investigated in the context of a quintessence scalar field cosmology. Such a conceivable evolution is…
Shear and rotation in Chaplygin cosmology
A. Del Popolo, F. Pace, S. P. Maydanyuk +2
We study the effect of shear and rotation on results previously obtained dealing with the application of the spherical collapse model (SCM) to generalized Chaplygin gas (gCg) domin…
From de Sitter to de Sitter: A New Cosmic Scenario without Dark Energy
J. A. S. Lima, S. Basilakos
In the present lore of cosmology, matter and space-time emerged from a singularity and evolved through four different regimes: inflation, radiation, dark matter and dark energy dom…
Dynamics and Constraints of the Massive Gravitons Dark Matter Flat Cosmologies
S. Basilakos, M. Plionis, M. E. S. Alves +1
We discuss the dynamics of the universe within the framework of Massive Graviton Dark Matter scenario (MGCDM) in which gravitons are geometrically treated as massive particles. In…
Are Galaxy Clusters Suggesting an Accelerating Universe Independent of SNe Ia and Gravity Metric Theory?
J. A. S. Lima, R. F. L. Holanda, J. V. Cunha
A kinematic method to access cosmic acceleration based exclusively on the Sunyaev-Zel'dovich effect (SZE) and X-ray surface brightness data from galaxy clusters is proposed. By usi…