J-PAS: forecasts on interacting vacuum energy models

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 Astrophysica...

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Bibliographic Details
Authors: Salzano, V., Pigozzo, C., Benetti, M., Borges, H. A., von Marttens, R., Carneiro, S., Alcaniz, J. S., Fabris, J. C., Tsujikawa, S., Benítez, Narciso, Bonoli, Silvia, Cenarro, A. J., Cristóbal-Hornillos, David, Dupke, Renato A., Ederoclite, Alessandro, López-Sanjuan, Carlos, Marín-Franch, Antonio, Marra, V., Moles, Mariano, Mendes de Oliveira, Claudia, Sodré, L. Jr., Taylor, Keith, Varela, Jesús, Vázquez Ramió, H.
Format: article
Status:Versión aceptada para publicación
Publication Date:2021
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/260002
Online Access:http://hdl.handle.net/10261/260002
Access Level:Open access
Keyword:Cosmological parameters from LSS
Dark energy theory
Galaxy surveys
Description
Summary: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. © 2021 IOP Publishing Ltd and Sissa Medialab.

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