München 2009 – scientific programme

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T: Fachverband Teilchenphysik

T 24: Gittereichtheorie

T 24.7: Talk

Monday, March 9, 2009, 18:30–18:45, A021

Cut-off effects of Wilson type fermions on the QCD equation of state to O(g²) — Owe Philipsen and •Lars Zeidlewicz — Institut für Theoretische Physik, Universität Münster

We compute the O(g²) contribution to the thermodynamic pressure for Wilson fermions in the standard, the twisted mass and clover improved formulation in lattice perturbation theory. Clover and maximally twisted fermions offer O(a)-improvement and thus are qualitatively comparable to standard staggered fermions. We compare the continuum approaches of these discretisations for the case of massive quarks along a line of constant physics and discuss their scaling behaviour.