Heidelberg 2015 – wissenschaftliches Programm

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SYEM: Symposium Extreme Matter: From Cold Atoms to the Quark Gluon Plasma

SYEM 2: Symposium Extreme Matter II

SYEM 2.3: Vortrag

Mittwoch, 25. März 2015, 15:00–15:15, C/HSO

Quark star matter in a SU(3) chiral Quark-Meson model — •Andreas Zacchi — Goethe Universität Frankfurt

The recent detections of the pulsars PSR J1614-2230 and of PSR J0348+0432 gives strong constraints on the parameter range in effective chiral models which describe compact stars. We discuss a chiral quark-meson model with a vacuum energy pressure based on a SU(3) linear-σ-model. Bosonic fluctuations are treated within the 2PI formalism. We study the impact of various parameters on the phase transition, the phase diagram and the equation of state for quark star matter. We solve the TOV-equations to check whether pure quark stars with 2 M_⊙ are feasible within the quark meson model.