The impact of neutrino masses on the determination of dark energy properties

Details The impact of neutrino masses on the determination of dark energy properties The impact of neutrino masses on the determination of dark energy properties

2006-08-17

arxiv.org/abs/astro-ph/0608351v1

Astropart.Phys.27:406-410,2007

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures

Scientific paper

10.1016/j.astropartphys.2007.01.

Recently, the Heidelberg-Moscow double beta decay experiment has claimed a detection for a neutrino mass with high significance. Here we consider the impact of this measurement on the determination of the dark energy equation of state. By combining the Heidelberg-Moscow result with the WMAP 3-years data and other cosmological datasets we constrain the equation of state to -1.67< w <-1.05 at 95% c.l., ruling out a cosmological constant at more than 95% c.l.. Interestingly enough, coupled neutrino-dark energy models may be consistent with such equation of state. While future data are certainly needed for a confirmation of the controversial Heildelberg-Moscow claim, our result shows that future laboratory searches for neutrino masses may play a crucial role in the determination of the dark energy properties.

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