Large scale structure and ISW effect in decaying vacuum cosmology

Autor:	Velten, H., Borges, H. A., Carneiro, S., Fazolo, R., Gomes, S.
Rok vydání:	2015
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics Astrophysics - Astrophysics of Galaxies
Zdroj:	MNRAS 452 (2015) 2220-2224
Druh dokumentu:	Working Paper
DOI:	10.1093/mnras/stv1443
Popis:	The concordance particle creation model - a class of $\Lambda(t)$CDM cosmologies - is studied using large scale structure (LSS) formation, with particular attention to the integrated Sachs-Wolfe (ISW) effect. The evolution of the gravitational potential and the amplitude of the cross-correlation of the cosmic microwave background (CMB) signal with LSS surveys are calculated in detail. We properly include in our analysis the peculiarities involving the baryonic dynamics of the $\Lambda(t)$CDM model which were not included in previous works. Although both the $\Lambda(t)$CDM and the standard cosmology are in agreement with available data for the CMB-LSS correlation, the former presents a slightly higher signal which can be identified with future data. Comment: 5 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1504.02416 Zobrazit plný text záznamu View this record from Arxiv