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Title: Do WMAP data favor neutrino mass and a coupling between Cold Dark Matter and Dark Energy?

Abstract

We fit WMAP5 and related data by allowing for a CDM-DE coupling and non-zero neutrino masses, simultaneously. We find a significant correlation between these parameters, so that simultaneous higher coupling and {nu}-masses are allowed. Furthermore, models with a significant coupling and {nu}-mass are statistically favoured in respect to a cosmology with no coupling and negligible neutrino mass (our best fits are: C{approx}1/2 m{sub p}, m{sub {nu}{approx}0}.12 eV per flavor). We use a standard Monte Carlo Markov Chain approach, by assuming DE to be a scalar field self-interacting through Ratra-Peebles or SUGRA potentials.

Authors:
;  [1]; ;  [2];  [3]
  1. Department of Physics G. Occhialini-Milano-Bicocca University, Piazza della Scienza 3, 20126 Milano (Italy)
  2. Institute of Theoretical Astrophysics, University of Oslo, Box 1029, 0315 Oslo (Norway)
  3. Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089-0484 (United States)
Publication Date:
OSTI Identifier:
21410205
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1241; Journal Issue: 1; Conference: Conference on invisible universe, Paris (France), 29 Jun - 3 Jul 2009; Other Information: DOI: 10.1063/1.3462710; (c) 2010 American Institute of Physics; Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CORRELATIONS; COSMOLOGY; COUPLING; FLAVOR MODEL; MARKOV PROCESS; MASS; MONTE CARLO METHOD; NEUTRINOS; NONLUMINOUS MATTER; PARTIAL DIFFERENTIAL EQUATIONS; SCALAR FIELDS; CALCULATION METHODS; COMPOSITE MODELS; DIFFERENTIAL EQUATIONS; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; LEPTONS; MASSLESS PARTICLES; MATHEMATICAL MODELS; MATTER; PARTICLE MODELS; QUARK MODEL; STOCHASTIC PROCESSES

Citation Formats

Bonometto, S A, La Vacca, G, I.N.F.N., Sezione di Milano, Kristiansen, J R, Mainini, R, and Colombo, L P. L. Do WMAP data favor neutrino mass and a coupling between Cold Dark Matter and Dark Energy?. United States: N. p., 2010. Web. doi:10.1063/1.3462710.
Bonometto, S A, La Vacca, G, I.N.F.N., Sezione di Milano, Kristiansen, J R, Mainini, R, & Colombo, L P. L. Do WMAP data favor neutrino mass and a coupling between Cold Dark Matter and Dark Energy?. United States. https://doi.org/10.1063/1.3462710
Bonometto, S A, La Vacca, G, I.N.F.N., Sezione di Milano, Kristiansen, J R, Mainini, R, and Colombo, L P. L. 2010. "Do WMAP data favor neutrino mass and a coupling between Cold Dark Matter and Dark Energy?". United States. https://doi.org/10.1063/1.3462710.
@article{osti_21410205,
title = {Do WMAP data favor neutrino mass and a coupling between Cold Dark Matter and Dark Energy?},
author = {Bonometto, S A and La Vacca, G and I.N.F.N., Sezione di Milano and Kristiansen, J R and Mainini, R and Colombo, L P. L.},
abstractNote = {We fit WMAP5 and related data by allowing for a CDM-DE coupling and non-zero neutrino masses, simultaneously. We find a significant correlation between these parameters, so that simultaneous higher coupling and {nu}-masses are allowed. Furthermore, models with a significant coupling and {nu}-mass are statistically favoured in respect to a cosmology with no coupling and negligible neutrino mass (our best fits are: C{approx}1/2 m{sub p}, m{sub {nu}{approx}0}.12 eV per flavor). We use a standard Monte Carlo Markov Chain approach, by assuming DE to be a scalar field self-interacting through Ratra-Peebles or SUGRA potentials.},
doi = {10.1063/1.3462710},
url = {https://www.osti.gov/biblio/21410205}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1241,
place = {United States},
year = {Wed Jun 23 00:00:00 EDT 2010},
month = {Wed Jun 23 00:00:00 EDT 2010}
}