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

被引：0

作者：

Bonometto, S. A. ^{[1
]}

La Vacca, G. ^{[1
]}

Kristiansen, J. R. ^{[2
]}

Mainini, R. ^{[2
]}

Colombo, L. P. L. ^{[3
]}

机构：

[1] Milano Bicocca Univ, Dept Phys G Occhialini, Piazza Sci 3, I-20126 Milan, Italy

[2] Univ Oslo, Inst Theoret Astrophys, N-0315 Oslo, Norway

[3] Univ So Calif, Dept Phys Astron, Los Angeles, CA 90089 USA

来源：

INVISIBLE UNIVERSE INTERNATIONAL CONFERENCE | 2010年 / 1241卷

关键词：

dynamical dark energy; massive neutrinos; CONSTRAINTS; UNIVERSE;

D O I：

10.1063/1.3462710

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 similar to 1/2m(p), m(nu) similar to 0.12eV 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.

引用

页码：735 / 740

页数：6

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