6533b836fe1ef96bd12a0a8f
RESEARCH PRODUCT
A fake Interacting Dark Energy detection?
Eleonora Di ValentinoOlga Menasubject
PhysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)010308 nuclear & particles physicsCosmic microwave backgroundDark matterCosmic background radiationFOS: Physical sciencesAstronomy and AstrophysicsGeneral Relativity and Quantum Cosmology (gr-qc)Cosmic varianceAstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencesGeneral Relativity and Quantum Cosmologysymbols.namesakeHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Space and Planetary Science0103 physical sciencesDark energysymbolsPlanck010303 astronomy & astrophysicsHubble's lawAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
Models involving an interaction between the Dark Matter and the Dark Energy sectors have been proposed to alleviate the long standing Hubble constant tension. In this paper we analyze whether the constraints and potential hints obtained for these interacting models remain unchanged when using simulated Planck data. Interestingly, our simulations indicate that a dangerous fake detection for a non-zero interaction among the Dark Matter and the Dark Energy fluids could arise when dealing with current CMB Planck measurements alone. The very same hypothesis is tested against future CMB observations, finding that only cosmic variance limited polarization experiments, such as PICO or PRISM, could be able to break the existing parameter degeneracies and provide reliable cosmological constraints. This paper underlines the extreme importance of confronting the results arising from data analyses with those obtained with simulations when extracting cosmological limits within exotic cosmological scenarios.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-09-26 |