Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 20: Schwerionenkollisionen und QCD Phasen
HK 20.5: Vortrag
Dienstag, 18. März 2014, 15:00–15:15, HZ 7
Chiral restoration and deconfinement in two-color QCD with two flavors of staggered quarks — •David Scheffler1, Christian Schmidt2, Philipp Scior1, Dominik Smith1, and Lorenz von Smekal1,3 — 1Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany — 2Fakultät für Physik, Universität Bielefeld, Bielefeld, Germany — 3Institut für Theoretische Physik, Justus-Liebig-Universität, Gießen, Germany
In preparation of lattice studies of the two-color QCD phase diagram we study chiral restoration and deconfinement at finite temperature with two flavors of staggered quarks using an RHMC algorithm on GPUs. We first study unquenching effects in local Polyakov loop distributions, and the Polyakov loop potential obtained via Legendre transformation, in a fixed-scale approach for heavier quarks. We also present the chiral condensate and the corresponding susceptibility over the lattice coupling across the chiral transition for lighter quarks. Using Ferrenberg-Swendsen reweighting we extract the maxima of the chiral susceptibility in order to determine pseudo-critical couplings on various lattices suitable for chiral extrapolations. These are then used to fix the relation between coupling and temperature in the chiral limit.