1997/04/30 by M. Gürtler, E. -M. Ilgenfritz, A. Schiller · 1 citation
Physics and Astronomy · #hep-lat #hep-ph
paper · pdf · doi:10.1103/physrevd.56.3888
published as Phys.Rev.D56:3888-3895,1997 · RevTeX, 19 pages, 11 figures, 2 tables; additional MC-data near the endpoint considered
arxiv created 1997/06/12 · arxiv updated 2014/11/17
We give a more precise characterisation of the end of the electroweak phase transition in the framework of the effective 3d SU(2)--Higgs lattice model than has been given before. The model has now been simulated at gauge couplings betaG=12 and 16 for Higgs masses MH^*=70, 74, 76 and 80 GeV up to lattices 963 and the data have been used for reweighting. The breakdown of finite volume scaling of the Lee-Yang zeroes indicates the change from a first order transition to a crossover at lambda3/g32=0.102(2) in rough agreement with results of Karsch et al (hep-lat/9608087) at βG=9 and smaller lattices. The infinite volume extrapolation of the discontinuity Delta < phi+ phi > /g32 turns out to be zero at lambda3/g32=0.107(2) being an upper limit. We comment on the limitations of the second method.