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The Similarity Renormalization Group (SRG) is used to soften interactions forab initio nuclear structure calculations by decoupling low- and high-energyHamiltonian matrix elements. The substantial contribution of both initial andSRG-induced three-nucleon forces requires their consistent evolution in athree-particle basis space before applying them to larger nuclei. While inprinciple the evolved Hamiltonians are unitarily equivalent, in practice theneed for basis truncation introduces deviations, which must be monitored. Herewe present benchmark no-core full configuration calculations with SRG-evolvedinteractions in p-shell nuclei over a wide range of softening. Thesecalculations are used to assess convergence properties, extrapolationtechniques, and the dependence of energies, including four-body contributions,on the SRG resolution scale.

P-shell nuclei using Similarity Renormalization Group evolved three-nucleon interactions