The phase structure of a chirally invariant lattice Higgs-Yukawa model - numerical simulations

Details The phase structure of a chirally invariant lattice Higgs-Yukawa model - numerical simulations The phase structure of a chirally invariant lattice Higgs-Yukawa model - numerical simulations

2007-07-26

arxiv.org/abs/0707.3849v1

JHEP0710:001,2007

Physics

High Energy Physics

High Energy Physics - Lattice

14 pages, 11 figures

Scientific paper

10.1088/1126-6708/2007/10/001

The phase diagram of a chirally invariant lattice Higgs-Yukawa model is explored by means of numerical simulations. The results revealing a rich phase structure are compared to analytical large Nf calculations which we performed earlier. The analytical and numerical results are in excellent agreement at large values of Nf. In the opposite case the large Nf computation still gives a good qualitative description of the phase diagram. In particular we find numerical evidence for the predicted ferrimagnetic phase at intermediate values of the Yukawa coupling constant and for the symmetric phase at strong Yukawa couplings. Emphasis is put on the finite size effects which can hide the existence of the latter symmetric phase.

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