2-11 October 2008
San Carlos, Sonora, México
America/Hermosillo timezone
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Contribution

San Carlos, Sonora, México

Constraining dark energy with neutrino physics

Description

We consider the impact on the properties of the dark energy component, which dominates the current expansion of the universe, due to the effects of neutrino physics. By including a large mass of the neutrinos of the order of $\Sigama_i m_i\simeq 1.8 eV$, as claimed by members of the Heidelberg-Moscow double beta decay experiment, we find that a cosmological constant is ruled out at more than $95 \%$ c.l. and that models with $w<-1$ are preferred. While future data is certainly needed to confirm the Heildelberg-Moscow claim, our result shows that future laboratory searches for neutrino masses may play a crucial role for the determination of the dark energy component.