Spontaneous symmetry breaking in a two-doublet lattice Higgs model

Details Spontaneous symmetry breaking in a two-doublet lattice Higgs model Spontaneous symmetry breaking in a two-doublet lattice Higgs model

2010-05-29

arxiv.org/abs/1005.5420v2

Phys.Rev.D82:034513,2010

Physics

High Energy Physics

High Energy Physics - Lattice

24 pages, 13 figures, references added, published version

Scientific paper

10.1103/PhysRevD.82.034513

An SU(2) lattice gauge theory with two doublets of complex scalar fields is considered. All continuous symmetries are identified and, using the nonperturbative methods of lattice field theory, the phase diagram is mapped out by direct numerical simulation. Two-doublet models contain phase transitions that separate qualitatively distinct regions of the parameter space. In some regions global symmetries are spontaneously broken. For some special choices of the model parameters, the symmetry-breaking order parameter is calculated. The pattern of symmetry breaking is verified further through observation of Goldstone bosons.

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