Numerical simulation of heavy fermions in an SU(2)_L x SU(2)_R symmetric Yukawa model

C. Frick; L. Lin; I. Montvay; G. Munster; M. Plagge; T. Trappenberg; H. Wittig

doi:10.1016/0550-3213(93)90350-X

paper

Numerical simulation of heavy fermions in an SU(2)_L x SU(2)_R symmetric Yukawa model

arXiv:hep-lat/9207021 · doi:10.1016/0550-3213(93)90350-X

Abstract

An exploratory numerical study of the influence of heavy fermion doublets on the mass of the Higgs boson is performed in the decoupling limit of a chiral $SU (2)_{L} \otimes SU (2)_{R}$ symmetric Yukawa model with mirror fermions. The behaviour of fermion and boson masses is investigated at infinite bare quartic coupling on $4^{3} \cdot 8$ , $6^{3} \cdot 12$ and $8^{3} \cdot 16$ lattices. A first estimate of the upper bound on the renormalized quartic coupling as a function of the renormalized Yukawa-coupling is given.

15 pp + 11 Figures appended as Postscript files