# Cluster-void degeneracy breaking: Neutrino properties and dark energy

@article{Sahlen2019ClustervoidDB,
title={Cluster-void degeneracy breaking: Neutrino properties and dark energy},
author={Martin Sahl'en},
journal={Physical Review D},
year={2019}
}
• M. Sahl'en
• Published 6 July 2018
• Physics
• Physical Review D
Future large-scale spectroscopic astronomical surveys, e.g. Euclid, will enable the compilation of vast new catalogues of clusters and voids in the galaxy distribution. By combining the constraining power of both cluster and void number counts, such surveys could place stringent simultaneous limits on the sum of neutrino masses $M_\nu$ and the dark energy equation of state $w(z) = w_0 + w_a z/(1+z)$. For minimal normal-hierarchy neutrino masses, we forecast that Euclid clusters + voids ideally…

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