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HK: Fachverband Physik der Hadronen und Kerne

HK 8: Hadron Structure and Spectroscopy II

HK 8.6: Talk

Monday, February 26, 2018, 18:00–18:15, HZO 50

Low-energy limit of the O(4) quark-meson model from the functional renormalization group approach — •Jürgen Eser¹, Florian Divotgey¹, Mario Mitter², and Dirk Rischke¹ — ¹Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Max-von-Laue-Str. 1, 60438 Frankfurt am Main — ²Department of Physics, Brookhaven National Laboratory, Upton, NY 11973

We compute the low-energy limit of the O(4)-symmetric quark-meson model as an effective field theory for Quantum Chromodynamics within the Functional Renormalization Group (FRG) approach. In particular, we analyze the renormalization group flow of momentum-dependent pion self-interactions beyond the local potential approximation. The numerical results for these couplings obtained from the FRG are confronted with a recent tree-level study. Additionally, their effect on the wave-function renormalization and the curvature masses is investigated.