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Bonn 2010 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 25: Gittereichtheorie I

T 25.2: Vortrag

Montag, 15. März 2010, 17:00–17:15, HG XIII

Towards the Nf=2 deconfinement transition temperature with O(a) improved Wilson fermions — •Bastian B. Brandt1, Owe Philipsen2, Hartmut Wittig1, and Lars Zeidlewicz21Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, Johann-Joachim Becher-Weg 45, 55099 Mainz, Germany — 2Institut für Theoretische Physik, Wilhelm-Klemm-Str. 9, 48149 Münster, Germany

A lot of effort in lattice simulations over the last years has been spent to observe the QCD deconfinement transition. Most state of the art simulations use so called rooted staggered fermions, controversially discussed in the literature, and/or, despite the ongoing effort, are affected by uncertainties and systematic effects, such as coarse lattices and heavy quarks. Therefore it is important to probe the transition with other fermion actions and improve systematics. Nowadays, first results with nonperturbatively O(a) improved Wilson fermions and twisted mass fermions are available, leaving some of the systematics issues unchanged. I report on an ongoing study of the transition, using two degenerate flavours of nonperturbatively O(a) improved Wilson fermions. We start with Nt=12 lattices, aiming at chiral and continuum limit with very light quarks and lattices, at least up to Nt=16.

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