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HK: Fachverband Physik der Hadronen und Kerne

HK 65: Heavy Ion Collisions and QCD Phases 9

HK 65.4: Vortrag

Donnerstag, 26. März 2015, 17:45–18:00, T/SR14

Baryon-Meson Model with Mirror Assignment beyond Mean-Field — •Johannes Weyrich¹, Nils Strodthoff², and Lorenz von Smekal^1,3 — ¹TU Darmstadt — ²Universität Heidelberg — ³Justus-Liebig-Universität Gießen

Nuclear matter has been studied intensively making use of the Walecka model and the chiral Walecka model since the 1970s. It was noted early on, however, that the chiral model (on mean-field level) leads to massless Lee-Wick nuclear matter in the chirally restored phase.

A promising candidate to describe nuclear matter and chiral symmetry restoration consitently is the parity doublet model (or mirror model). It has already been treated in a mean-field (MF) approach and showed promising results.

We studied the parity doublet model in an extended mean-field (eMF) approach as well as with full mesonic fluctuations, using a functional renormalization group (FRG) framework.