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Evolution of density perturbations in a realistic universe
Authors:Marek?Demianski  author-information"  >  author-information__contact u-icon-before"  >  mailto:mde@fuw.edu.pl"   title="  mde@fuw.edu.pl"   itemprop="  email"   data-track="  click"   data-track-action="  Email author"   data-track-label="  "  >Email author,Zdzis?aw?A.?Golda,Andrzej?Woszczyna
Affiliation:(1) Institute of Theoretical Physics, University of Warsaw, Warsaw, Poland;(2) Astronomical Observatory, Jagellonian University, Cracow, Poland
Abstract:Prompted by the recent more precise determination of the basic cosmological parameters and growing evidence that the matter-energy content of the universe is now dominated by dark energy and dark matter we present the general solution of the equation that describes the evolution of density perturbations in the linear approximation. It turns out that as in the standard CDM model the density perturbations grow very slowly during the radiation dominated epoch and their amplitude increases by a factor of about 4000 in the matter and later dark energy dominated epoch of expansion of the universe.
Keywords:Cosmology  Density  Expansion
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