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Advances in High Energy Physics
/
2012
/
Article
/
Fig 2
/
Review Article
Neutrino Mass from Cosmology
Figure 2
Evolution of the background energy densities in terms of the fractions
, from the time when
MeV until now, for each component of a flat universe with
and current density fractions
,
, and
. The three neutrino masses are
,
eV, and
eV.