Grand unification in higher dimensions
نویسندگان
چکیده
منابع مشابه
Grand Unification in Higher Dimensions
We have recently proposed an alternative picture for the physics at the scale of gauge coupling unification, where the unified symmetry is realized in higher dimensions but is broken locally by a symmetry breaking defect. Gauge coupling unification, the quantum numbers of quarks and leptons and the longevity of the proton arise as phenomena of the symmetrical bulk, while the lightness of the Hi...
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We consider the scenario where all the couplings in the theory are strong at the cut-off scale, in the context of higher dimensional grand unified field theories where the unified gauge symmetry is broken by an orbifold compactification. In this scenario, the noncalculable correction to gauge unification from unknown ultraviolet physics is naturally suppressed by the large volume of the extra d...
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We investigate gauge coupling unification in higher dimensional GUT models with split supersymmetry. We focus on 5d and 6d orbifold GUTs, which permit a simple solution to several problems of 4D GUTs as well as control over GUT scale threshold corrections. In orbifold GUTs, calculable threshold corrections can raise or lower the prediction for αs(MZ) in a way that depends on the location of Hig...
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A complete 5-dimensional SU(5) unified theory is constructed which, on compactification on the orbifold S/(Z2 ×Z ′ 2), yields the minimal supersymmetric standard model. The orbifold accomplishes SU(5) gauge symmetry breaking, doublet-triplet splitting, and a vanishing of proton decay from operators of dimension 5. Until 4d supersymmetry is broken, all proton decay from dimension 4 and dimension...
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The electroweak Higgs doublets are identified as components of a vector multiplet in a higher dimensional supersymmetric field theory. We construct a minimal model in 6D where the electroweak SU(2) ⊗ U(1) gauge group is extended to SU(3), and unified 6D models with the unified SU(5) gauge symmetry extended to SU(6). In these realistic theories the extended gauge group is broken by orbifold boun...
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ژورنال
عنوان ژورنال: Annals of Physics
سال: 2003
ISSN: 0003-4916
DOI: 10.1016/s0003-4916(03)00077-0