BARYONIC ACOUSTIC OSCILLATIONS VIA THE RENORMALIZATION GROUP

2007/02/26 by S. Matarrese, Sabino Matarrese, Massimo Pietroni · 7 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Scientific Research and Discoveries #astro-ph #hep-ph #hep-th

paper · pdf · doi:10.1142/s0217732308026182

published as Mod.Phys.Lett.A23:25-32,2008 · 4 pages, 4 figures

arxiv created 2007/02/26 · openalex publication_date 2008/01/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Renormalization Group techniques, successfully employed in quantum field theory and statistical physics, are applied to study the dynamics of structure formation in the Universe. A semi-analytic approach to the computation of the nonlinear power-spectrum of dark matter density fluctuations is proposed. The method can be applied down to zero redshift and to length scales where perturbation theory fails. Our predictions accurately fit the results of numerical simulations in reproducing the "acoustic oscillations" features of the power spectrum, which will be accurately measured in future galaxy surveys and will provide a probe to distinguish among different dark energy models.

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