Divergences and Symmetries in Higgs-Gauge Unification Theories

Abstract

In theories with extra dimensions the Standard Model Higgs field can be identified with the internal components of higher-dimensional gauge fields (Higgs-gauge unification). The higher-dimensional gauge symmetry prevents the Higgs mass from quadratic divergences, but at the fixed points of the orbifold this symmetry is broken and divergences can arise if U(1) subgroups are conserved. We show that another symmetry, remnant of the internal rotation group after orbifold projection, can avoid the generation of such divergences.

arXiv comment6 pages, 1 figure. Talk given at the "XL Rencontres de Moriond on Electroweak Interactions and Unified Theories", La Thuile, Italy, 5-12 Mar 2005

References in corpus (19)

• Limits on extra dimensions in orbifold compactifications of superstrings
• Brane Couplings from Bulk Loops
• Standard Model Higgs from Higher Dimensional Gauge Fields
• The Hosotani Mechanism in Bulk Gauge Theories with an Orbifold Extra Space S^1/Z_2
• The Origin of Spontaneous Symmetry Breaking in Theories with Large Extra Dimensions
• Bulk and brane radiative effects in gauge theories on orbifolds
• Dynamical Rearrangement of Gauge Symmetry on the Orbifold S^1/Z_2
• Boundary conditions as constraints
• Chiral fermions, orbifolds, scalars and fat branes
• Dynamical Gauge-Higgs Unification in the Electroweak Theory
• Dynamical Gauge Symmetry Breaking and Mass Generation on the Orbifold T^2/Z_2
• Matter Representations and Gauge Symmetry Breaking via Compactified Space
• Radiative brane-mass terms in D>5 orbifold gauge theories
• Classification and dynamics of equivalence classes in SU(N) gauge theory on the orbifold $S^1/Z_2$
• Higgs-gauge unification without tadpoles
• Localized tadpoles of anomalous heterotic U(1)'s
• Stringy profiles of gauge field tadpoles near orbifold singularities: I. heterotic string calculations
• Gauge-Higgs Unification in six dimensions
• Symmetry Breaking in Extra Dimensions