Göttingen 2012 – scientific programme

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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 Nagy^1,2, John Bulava^2,3, Philipp Gerhold^1,2, Karl Jansen², and Jim Kallarackal^1,2 — 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.