  The observed pattern of neutrino mixing angles is in good agreement with the
hypothesis of neutrino anarchy, which posits that Nature has chosen the entries
of the leptonic mixing matrix at random. In this paper we investigate how
stable this conclusion is under renormalization group effects. Working in the
simplest type-I seesaw model and two variants of the inverse seesaw model we
study how the statistical distributions of the neutrino mixing parameters
evolve between the Grand Unification scale and the electroweak scale.
Especially in the inverse seesaw case we find significant distortions: mixing
angles tend to be smaller after RG running, and the Dirac CP phase tends to be
closer to zero. The p-value describing the compatibility between the observed
mixing angles and the anarchy hypothesis increases by 10-20%. This illustrates
that RG effects are highly relevant for quantitative studies of the anarchy
scenario.
