Ab initio electromagnetic observables with the in-medium similarity renormalization group

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We present the formalism for consistently transforming transition operators within the in-medium similarity renormalization group framework.

• We implement the operator transformation in both the equations-of-motion and valence-space variants, and present first results for electromagnetic transitions and moments in medium-mass nuclei using consistently-evolved operators, including the induced two-body parts.
• These results are compared to experimental values, and--where possible--the results of no-core shell model calculations using the same input chiral interaction.
• We find good agreement between the equations-of-motion and valence space approaches.