Münster 2017 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 49: Structure and Dynamics of Nuclei VIII

HK 49.2: Talk

Thursday, March 30, 2017, 17:15–17:30, F 33

Precision calculations of M1 observables in light nuclei — •Laura Mertes, Thomas Huether, and Robert Roth — IKP, TU Darmstadt

In ab initio nuclear structure calculations we use nuclear interactions derived in chiral EFT, softened by a unitary transformation to accelerate the convergence of many-body calculations. One method is the Similarity Renormalization Group (SRG) transformation that decouples high- and low-energy physics through a flow evolution of the Hamiltonian and other operators, such as electromagnetic observables. Up to now, electromagnetic observables were almost always calculated with the bare, unevolved operator on evolved wave functions obtained as eigenstates from solving the many-body eigenvalue problem. The effects of a consistent SRG transformation are in the range of a few percent and thus performing a consistent SRG transformation is essential for precision calculations. We present first results for M1 observables in light nuclei obtained with a consistent SRG transformation.

Supported by DFG through SFB 1245.