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arXiv · 2103.01571

J-PAS: Forecasts for dark matter - dark energy elastic couplings

David Figueruelo·Miguel Aparicio Resco·Florencia A. Teppa Pannia·Jose Beltrán Jiménez·Dario Bettoni·Antonio L. Maroto·L. Raul Abramo·Jailson Alcaniz·Narciso Benitez·Silvia Bonoli·Saulo Carneiro·Javier Cenarro·David Cristóbal-Hornillos·Renato A. Dupke·Alessandro Ederoclite·Carlos López-Sanjuan·Antonio Marín-Franch·Valerio Marra·Claudia Mendes de Oliveira·Mariano Moles·Laerte Sodré Jr.·Keith Taylor·Jesús Varela·Héctor Vázquez Ramió
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Abstract

We consider a cosmological model where dark matter and dark energy feature a coupling that only affects their momentum transfer in the corresponding Euler equations. We perform a fit to cosmological observables and confirm previous findings within these scenarios that favour the presence of a coupling at more than $3\sigma$. This improvement is driven by the Sunyaev-Zeldovich data. We subsequently perform a forecast for future J-PAS data and find that clustering measurements will permit to clearly discern the presence of an interaction within a few percent level with the uncoupled case at more than $10\sigma$ when the complete survey, covering $8500$ sq. deg., is considered. We found that the inclusion of weak lensing measurements will not help to further constrain the coupling parameter. For completeness, we compare to forecasts for DESI and Euclid, which provide similar discriminating power.

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David Figueruelo, Miguel Aparicio Resco, Florencia A. Teppa Pannia, Jose Beltrán Jiménez, Dario Bettoni, Antonio L. Maroto, L. Raul Abramo, Jailson Alcaniz, Narciso Benitez, Silvia Bonoli, Saulo Carneiro, Javier Cenarro, David Cristóbal-Hornillos, Renato A. Dupke, Alessandro Ederoclite, Carlos López-Sanjuan, Antonio Marín-Franch, Valerio Marra, Claudia Mendes de Oliveira, Mariano Moles, Laerte Sodré Jr., Keith Taylor, Jesús Varela, Héctor Vázquez Ramió. 2021-03-02. J-PAS: Forecasts for dark matter - dark energy elastic couplings. https://doi.org/10.1088/1475-7516/2021/07/022

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