Dresden 2013 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 23: Quantenfeldtheorie 1

T 23.6: Vortrag

Dienstag, 5. März 2013, 18:10–18:25, WIL-C129

Corrections to the strong coupling limit of staggered lattice QCD — •Wolfgang Unger¹, Philippe de Forcrand², Michael Fromm¹, Jens Langelage², Kotaroh Miura³, and Owe Philipsen¹ — ¹ITP, Goethe Universität Frankfurt, Deutschland — ²ITP, ETH Zürich, Schweiz — ³INFN Laboratori Nazionali di Frascati, Italy

The strong coupling limit of staggered lattice QCD has been studied since decades, both via Monte Carlo and Mean field theory. In this model, the finite density sign problem is mild and the full phase diagram can be studied, even in the chiral limit. It is however desirable to understand the effect of a finite lattice coupling β on the phase diagram in the µ_B-T plane in order to see how it might be related to the phase diagram of continuum QCD. Here we discuss how to construct an effective theory for non-zero lattice coupling, valid to O(β), and present Monte Carlo results incorporating these corrections.