We consider cosmological models with dynamical dark energy (dDE) coupled to cold dark matter (CDM), while simultaneously allowing neutrinos to be massive. Using a MCMC approach, we compare these models with a wide range of cosmological data sets. We find a strong correlation between this coupling strength and the neutrino mass. This correlation persists when BAO data are included in the analysis. We add then priors on ν mass from particle experiments. The claimed detection of ν mass from the Heidelberg-Moscow neutrinoless double-β decay experiment would imply a 7-8σ detection of CDM-DE coupling. Similarly, the detection of ν mass from coming KATRIN tritium β decay experiment will imply a safe detection of a coupling in the dark sector. Previous attempts to accommodate cosmic phenomenology with such possible ν mass data made recourse to a w<-1 eoS. We compare such an option with the coupling option and find that the latter allows a drastic improvement. © 2010 Elsevier B.V. All rights reserved.

Kristiansen, J., LA VACCA, G., Colombo, L., Mainini, R., Bonometto, S. (2010). Coupling between cold dark matter and dark energy from neutrino mass experiments. NEW ASTRONOMY, 15(7), 609-613 [10.1016/j.newast.2010.02.003].

Coupling between cold dark matter and dark energy from neutrino mass experiments

LA VACCA, GIUSEPPE
Secondo
;
MAININI, ROBERTO
Penultimo
;
BONOMETTO, SILVIO
2010

Abstract

We consider cosmological models with dynamical dark energy (dDE) coupled to cold dark matter (CDM), while simultaneously allowing neutrinos to be massive. Using a MCMC approach, we compare these models with a wide range of cosmological data sets. We find a strong correlation between this coupling strength and the neutrino mass. This correlation persists when BAO data are included in the analysis. We add then priors on ν mass from particle experiments. The claimed detection of ν mass from the Heidelberg-Moscow neutrinoless double-β decay experiment would imply a 7-8σ detection of CDM-DE coupling. Similarly, the detection of ν mass from coming KATRIN tritium β decay experiment will imply a safe detection of a coupling in the dark sector. Previous attempts to accommodate cosmic phenomenology with such possible ν mass data made recourse to a w<-1 eoS. We compare such an option with the coupling option and find that the latter allows a drastic improvement. © 2010 Elsevier B.V. All rights reserved.
Articolo in rivista - Articolo scientifico
Cosmic microwave background; Cosmological parameters; Cosmology; Dark matter; Space and Planetary Science; Astronomy and Astrophysics; Instrumentation
English
609
613
5
Kristiansen, J., LA VACCA, G., Colombo, L., Mainini, R., Bonometto, S. (2010). Coupling between cold dark matter and dark energy from neutrino mass experiments. NEW ASTRONOMY, 15(7), 609-613 [10.1016/j.newast.2010.02.003].
Kristiansen, J; LA VACCA, G; Colombo, L; Mainini, R; Bonometto, S
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/73378
Citazioni
  • Scopus 17
  • ???jsp.display-item.citation.isi??? 16
Social impact