English

$Z_6$ symmetry, electroweak transition, and magnetic monopoles at high temperature

High Energy Physics - Lattice 2014-11-17 v3 High Energy Physics - Phenomenology

Abstract

We consider the lattice realization of the Standard Model with an additional Z6Z_6 symmetry. Numerical simulations were performed on the asymmetric lattice, which corresponds to the finite temperature theory. Our choice of parameters corresponds to large Higgs masses (MH>90M_H > 90 Gev). The phase diagram was investigated and has been found to be different from that of the usual lattice realization of the Standard Model. It has been found, that the confinement-deconfinement phase transition lines for the SU(2) and SU(3) fields coincide. The transition line between Higgs and symmetric deconfinement parts of the phase diagram and the confinement-deconfinement transition line meet in a triple point. The transition between Higgs and symmetric parts of the phase diagram corresponds to the finite temperature electroweak transition/crossover. We see for the first time evidence that Nambu monopoles are condensed at T>TcT>T_c while at T<TcT<T_c their condensate vanishes.

Keywords

Cite

@article{arxiv.hep-lat/0606010,
  title  = {$Z_6$ symmetry, electroweak transition, and magnetic monopoles at high temperature},
  author = {B. L. G. Bakker and A. I. Veselov and M. A. Zubkov},
  journal= {arXiv preprint arXiv:hep-lat/0606010},
  year   = {2014}
}

Comments

Latex, 14 pages