Large scale structure and ISW effect in decaying vacuum cosmology

Abstract

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.

5 pages, 4 figures

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Cited by in corpus (16)

• Evidence for cosmological particle creation?
• Looking for interactions in the cosmological dark sector
• Dynamical system analysis of interacting models
• Sources of $H_0$-tensions in dark energy scenarios
• Growth of structure in interacting vacuum cosmologies
• J-PAS: forecasts on interacting vacuum energy models
• Differentiating dark interactions with perturbation
• Running Vacuum Cosmological Models: Linear Scalar Perturbations
• The Integrated Sachs-Wolfe Effect in Interacting Dark Matter-Dark Energy Models
• The Integrated Sachs-Wolfe Effect in 4D Einstein-Gauss-Bonnet Gravity
• The Integrated Sachs-Wolfe Effect in the Bulk Viscous Dark Energy Model
• Degeneracy between nonadiabatic dark energy models and $\Lambda$CDM: ISW effect and the cross correlation of CMB with galaxy clustering data
• Can the cosmological dark sector be modeled by a single scalar field?
• The cosmological dark sector as a scalar $\sigma$-meson field
• Degeneracy between warm and coupled cold dark matter: A clarifying note
• Integrated Sachs-Wolfe maps from the Gower Street $w$CDM simulations