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

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 coupli...

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Detalles Bibliográficos
Autores: Figueruelo, David, Aparicio Resco, Miguel, Teppa Pannia, Florencia A., Beltrán Jiménez, Jose, Bettoni, Dario, Maroto, Antonio L., Abramo, L. Raul, Alcaniz, Jailson, Benítez, Narciso, Bonoli, Silvia, Carneiro, Saulo, Cenarro, Javier, Cristóbal-Hornillos, David, Dupke, Renato A., Ederoclite, Alessandro, López-Sanjuan, Carlos, Marín-Franch, Antonio, Marra, Valerio, Mendes de Oliveira, Claudia, Moles, Mariano, Sodré, Laerte, Taylor, Keith, Varela, Jesús, Vázquez Ramió, Héctor
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/256649
Acceso en línea:http://hdl.handle.net/10261/256649
Access Level:acceso abierto
Palabra clave:Dark energy theory
Dark matter theory
Descripción
Sumario: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 3σ. This improvement is mainly driven by cluster counts from Planck Sunyaev-Zeldovich data that we include as a certain prior. 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 10σ 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. © 2021 IOP Publishing Ltd and Sissa Medialab.

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