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Heidelberg 2015 – scientific programme

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SYEP: Symposium Efimov Physics

SYEP 1: Symposium Efimov Physics I

SYEP 1.4: Talk

Monday, March 23, 2015, 12:45–13:00, C/gHS

Limit Cycles from the Similarity Renormalization Group — •Patrick Niemann1 and Hans-Werner Hammer1,21Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany — 2ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany

Renormalization group (RG) limit cycles have been identified and studied in several systems. We investigate the limit cycle with the similarity renormalization group (SRG). In nuclear physics the SRG is applied to soften nuclear potentials in order to achieve improved numerical convergence.

We search for signatures of limit cycles in SRG evolved potentials. We examine two different systems, which exhibit the limit cycle. The first system is a two-body system with the 1/R2 potential and the second one is a three-body system with resonant interactions, where the Efimov effect occurs. Besides the standard kinetic energy generator we apply two other generators.

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