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T: Fachverband Teilchenphysik
T 23: Gittereichtheorie
T 23.4: Talk
Thursday, March 1, 2012, 17:30–17:45, VG 3.101
Recent results in a chirally invariant Higgs-Yukawa model — •Attila Nagy1,2, John Bulava2,3, Philipp Gerhold1,2, Karl Jansen2, and Jim Kallarackal1,2 — 1Humboldt-Universät zu Berlin — 2NIC, DESY Zeuthen — 3CERN, Geneva
We study a chirally invariant Higgs-Yukawa model on a four dimensional space-time lattice by means of a polynonial Hybrid Monte Carlo algorithm. We show results concerning Higgs boson mass bounds in the presence of a hypothetical fourth quark generation for various quark masses. Furthermore we determine the critical temperature of the model, where a phase transition in the vacuum expectation value of the scalar field takes place.