Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/58752
Title: Structure formation in non-local bouncing models
Issue Date: May-2023
Publisher: IOP Publishing
Citation: BUFALO, R. S.; OLIVEIRA, D. J. de. Structure formation in non-local bouncing models. Journal of Cosmology and Astroparticle Physics, [S.l.], v. 2023, May 2023.
Abstract: In this study, we investigate the growth of structures within the Deser-Woodard nonlocal theory and extend it to various bouncing cosmology scenarios. Our findings show that the observable structure growth rate, fσ8, in a vacuum-dominated universe is finite within the redshift range of 0 < z < 2, contrary to previous literature. Although fσ8 exhibits no divergences, we observe a slight difference between the evolution of the ΛCDM and the non-local DW II models. Regarding structure formation in bouncing cosmologies, we evaluate the evolution of fσ8 near the bouncing point. Among the different bouncing cases we explore, the oscillatory bounce and pre-inflationary asymmetrical bounce demonstrate a physical profile where the growth rate begins as a small perturbation in the early epoch and increases with inflation, which can be regarded as the seeds of large-scale structures. These findings are significant because they shed light on the growth of seed fluctuations into cosmic structures resulting from non-local effects.
URI: https://iopscience.iop.org/article/10.1088/1475-7516/2023/05/010
http://repositorio.ufla.br/jspui/handle/1/58752
Appears in Collections:DFI - Artigos publicados em periódicos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.