Study of the Higgs-Yukawa theory in the strong-Yukawa coupling regime

Details Study of the Higgs-Yukawa theory in the strong-Yukawa coupling regime Study of the Higgs-Yukawa theory in the strong-Yukawa coupling regime

2011-11-19

arxiv.org/abs/1111.4544v1

PoS Lattice2011:075,2011

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 3 figures, 1 table. Talk presented at the XXIX International Symposium on Lattice Field Theory - Lattice 2011, Lake T

Scientific paper

In this article, we present an ongoing lattice study of the Higgs-Yukawa model, in the regime of strong-Yukawa coupling, using overlap fermions. We investigated the phase structure in this regime by computing the Higgs vacuum expectation value, and by exploring the finite-size scaling behaviour of the susceptibility corresponding to the magnetisation. Our preliminary results indicate the existence of a second-order phase transition when the Yukawa coupling becomes large enough, at which the Higgs vacuum expectation value vanishes and the susceptibility diverges.

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