Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2010-07-26
Gen.Rel.Grav.43:61-72,2011
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
11 pages, 2 figures, accepted for publication in General Relativity and Gravitation
Scientific paper
10.1007/s10714-010-1069-2
Cosmologies including continuous matter creation are able to reproduce the main properties of the standard $\Lambda$CDM model, in particular in cases where the particle and entropy production rates are equal. These specific models, characterized by a mass density equal to the critical value, behave like the standard $\Lambda$CDM model at early times whereas their late evolution is similar to the steady-state cosmology. The maximum amplitude of density fluctuations in these models depends on the adopted creation rate, related here to the parameter $\Omega_v$ and this limitation could be a difficulty for the formation of galaxies and large-scale structure in this class of universe. Additional problems are related with predictions either of the random peculiar velocities of galaxies or the present density of massive clusters of galaxies, both being largely overestimated with respect to observational data.
Freitas Pacheco José A. de
Roany Alain de
No associations
LandOfFree
Continuous matter creation and the acceleration of the universe: the growth of density fluctuations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Continuous matter creation and the acceleration of the universe: the growth of density fluctuations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous matter creation and the acceleration of the universe: the growth of density fluctuations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-559995