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arXiv · hep-lat/9704013

Where the electroweak phase transition ends

M. Gürtler·E. -M. Ilgenfritz·A. Schiller
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Abstract

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 beta_G=12 and 16 for Higgs masses M_H^*=70, 74, 76 and 80 GeV up to lattices 96^3 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 lambda_3/g_3^2=0.102(2) in rough agreement with results of Karsch et al (hep-lat/9608087) at β_G=9 and smaller lattices. The infinite volume extrapolation of the discontinuity Delta < phi^+ phi > /g_3^2 turns out to be zero at lambda_3/g_3^2=0.107(2) being an upper limit. We comment on the limitations of the second method.

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M. Gürtler, E. -M. Ilgenfritz, A. Schiller. 1997-06-12. Where the electroweak phase transition ends. https://doi.org/10.1103/physrevd.56.3888

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