caa a22 4500 445385669 CHVBK 20180317143031.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10714-010-1069-2 doi (NATIONALLICENCE)springer-10.1007/s10714-010-1069-2 Continuous matter creation and the acceleration of the universe: the growth of density fluctuations [Elektronische Daten] [Alain de Roany, J. de Freitas Pacheco] Cosmologies including continuous matter creation are able to reproduce the main properties of the standard ΛCDM 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 ΛCDM 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 Ωv 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. Springer Science+Business Media, LLC, 2010 Cosmological fluctuations nationallicence Matter creation nationallicence Accelerating universes nationallicence de Roany Alain Université de Nice-Sophia Antipolis-Observatoire de la Côte d'Azur, BP 4229, 06304, Nice Cedex 4, France aut de Freitas Pacheco J. Université de Nice-Sophia Antipolis-Observatoire de la Côte d'Azur, BP 4229, 06304, Nice Cedex 4, France aut General Relativity and Gravitation Springer US; http://www.springer-ny.com 43/1(2011-01-01), 61-72 0001-7701 43:1<61 2011 43 10714 https://doi.org/10.1007/s10714-010-1069-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10714-010-1069-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- de Roany Alain Université de Nice-Sophia Antipolis-Observatoire de la Côte d'Azur, BP 4229, 06304, Nice Cedex 4, France aut NATIONALLICENCE 700 1- de Freitas Pacheco J. Université de Nice-Sophia Antipolis-Observatoire de la Côte d'Azur, BP 4229, 06304, Nice Cedex 4, France aut NATIONALLICENCE 773 0- General Relativity and Gravitation Springer US; http://www.springer-ny.com 43/1(2011-01-01), 61-72 0001-7701 43:1<61 2011 43 10714 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer