Study of the Higgs-Yukawa theory in the strong-Yukawa coupling regime
  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. 
John Bulava, Philipp Gerhold, George W.-S. Hou, Karl Jansen, Bastian   Knippschild, C.-J. David Lin, Kei-Ichi Nagai, Attila ...
hep-lat hep-ph