Dark Energy and Large-Scale Structure of the Universe

Details Dark Energy and Large-Scale Structure of the Universe Dark Energy and Large-Scale Structure of the Universe

2004-12-13

arxiv.org/abs/astro-ph/0412303v2

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, submitted to the proceedings of international conference "Astronomy in Ukraine - Past, Present, Future", Ju

Scientific paper

The evolution of matter density perturbations in two-component model of the Universe consisting of dark energy (DE) and dust-like matter (M) is considered. We have analyzed it for two kinds of DE with $\omega\ne -1$: a) unperturbed energy density and b) perturbed one (uncoupled with matter). For these cases the linear equations for evolution of the gauge-invariant amplitudes of matter density perturbations are presented. It is shown that in the case of unperturbed energy density of DE the amplitude of matter density perturbations grow slightly faster than in the second case.

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