Dynamical Gauge Symmetry Breaking by Wilson Lines in the Electroweak Theory

Abstract

In higher dimensional gauge theory, dynamics of non-Abelian Aharonov-Bohm phases induces gauge symmetry breaking through the Hosotani mechanism. Higgs fields in the four-dimensional spacetime are identified with the extra-dimensional components of the gauge fields. Basics of the Hosotani mechanism are reviewed, and applied to the electroweak theory. The Higgs boson mass and the Kaluza-Klein excitation scale are related to the weak W-boson mass.