J-PAS: forecasts on interacting vacuum energy models

DOI: 
10.1088/1475-7516/2021/09/033
Publication date: 
24/09/2021
Main author: 
Salzano, V.
IAA authors: 
Benítez, N.
Authors: 
Salzano, V.;Pigozzo, C.;Benetti, M.;Borges, H. A.;von Marttens, R.;Carneiro, S.;Alcaniz, J. S.;Fabris, J. C.;Tsujikawa, S.;Benítez, N.;Bonoli, S.;Cenarro, A. J.;Cristóbal-Hornillos, D.;Dupke, R. A.;Ederoclite, A.;López-Sanjuan, C.;Marín-Franch, A.;Marra, V.;Moles, M.;Mendes de Oliveira, C.;Sodré, L., Jr.;Taylor, K.;Varela, J.;Vázquez Ramió, H.
Journal: 
Journal of Cosmology and Astroparticle Physics
Publication type: 
Article
Volume: 
2021
Pages: 
033
Abstract: 
The next generation of galaxy surveys will allow us to test some fundamental aspects of the standard cosmological model, including the assumption of a minimal coupling between the components of the dark sector. In this paper, we present the Javalambre Physics of the Accelerated Universe Astrophysical Survey (J-PAS) forecasts on a class of unified models where cold dark matter interacts with a vacuum energy, considering future observations of baryon acoustic oscillations, redshift-space distortions, and the matter power spectrum. After providing a general framework to study the background and linear perturbations, we focus on a concrete interacting model without momentum exchange by taking into account the contribution of baryons. We compare the J-PAS results with those expected for DESI and Euclid surveys and show that J-PAS is competitive to them, especially at low redshifts. Indeed, the predicted errors for the interaction parameter, which measures the departure from a ΛCDM model, can be comparable to the actual errors derived from the current data of cosmic microwave background temperature anisotropies.
Database: 
ADS
URL: 
https://ui.adsabs.harvard.edu/#abs/2021JCAP...09..033S/abstract
ADS Bibcode: 
2021JCAP...09..033S
Keywords: 
cosmological parameters from LSS;dark energy theory;galaxy surveys;Astrophysics - Cosmology and Nongalactic Astrophysics