Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2006-06-15
Phys.Lett. B642 (2006) 147-152
Physics
High Energy Physics
High Energy Physics - Lattice
Latex, 14 pages
Scientific paper
10.1016/j.physletb.2006.09.006
We consider the lattice realization of the Standard Model with an additional $Z_6$ 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 ($M_H > 90$ 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 $T>T_c$ while at $T
Bakker Bernard. L. G.
Veselov A. I.
Zubkov M. . A.
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