  We present the first results for the neutron matter equation of state (EOS)
using nucleon-nucleon and three-nucleon chiral effective field theory
interactions that are consistently evolved in the framework of the Similarity
Renormalization Group (SRG). The dependence of the EOS on the SRG resolution
scale is greatly reduced when induced three-nucleon forces (3NF) are included
and the residual variation, which in part is from missing induced four-body
interactions, is comparable to estimated many-body perturbation theory
truncation errors. The relative growth with decreasing resolution of the 3NF
contributions to the energy per neutron is of natural size, but it accelerates
at the lowest resolutions where strong renormalization of the long-range 3NF
matrix elements is also observed.
