Numerical Simulations of an SU(2)_L x SU(2)_R-symmetric Higgs-Yukawa Model on the QUADRICS Q16

We report on our work on the SU(2)_L x SU(2)_R symmetric Higgs Yukawa Model with mirror fermion action. Our model describes a fermion Higgs system in the limit of vanishing gauge coupling. Setting the bare Yukawa coupling of the mirror fermions G_\chi to zero, we want to determine the triviality bounds on the renormalized Yukawa coupling of the fermions G_{R\psi} and the scalar self-coupling g_R on 8^3x16 and 16^3x32 lattices.