J-PAS: forecasts on interacting vacuum energy models. Issue 9 (23rd September 2021)

• Record Type: Journal Article
• 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 Jr, L.; Taylor, K.; Varela, J.; Vázquez Ramió, H.
• Is Part Of: Journal of cosmology and astroparticle physics. Volume 2021:Issue 9(2021)
• Publication Date: 2021-09-23
• Subjects: cosmological parameters from LSS -- dark energy theory -- galaxy surveys; Cosmology -- Periodicals; Astrophysics -- Periodicals; 523.0105
• DOI: 10.1088/1475-7516/2021/09/033
• Languages: English
• ISSNs: 1475-7516

Abstract

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.