Bochum 2018 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 32: Structure and Dynamics of Nuclei VI
HK 32.4: Talk
Wednesday, February 28, 2018, 14:45–15:00, HZO 70
Similarity Renormalization Group evolution for deuteron breakup in pionless effective field theory — •Marc Schönborn1,2, Sebastian König1,2, and Achim Schwenk1,2,3 — 1Institut für Kernphysik, Technische Universität Darmstadt — 2ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH — 3Max-Planck-Institut für Kernphysik, Heidelberg
Similarity Renormalization Group (SRG) methods are used to evolve nuclear interactions towards diagonal form by decoupling high- and low-energy contributions while low-energy observables remain unchanged. To ensure this, all operators have to be evolved consistently along with the Hamiltonian. One of the simplest reactions where this can be studied, which still covers all relevant physics aspects, is deuteron breakup. In the past, SRG evolution of this process has been studied using potential models. At low energies, where pions are not resolved, pionless effective field theory is very well suited for the description of the breakup process. In this work, we discuss how this simplification can be used to gain further insights into the SRG evolution of operators.
*This work is supported by the DFG trough Grant SFB 1245 and the ERC Grant No. 307986 STRONGINT.