Wilson Lines and Symmetry Breaking on Orbifolds
نویسنده
چکیده
A five-dimensional SU(5) grand unified theory is constructed on the orbifold S/Z2, with gauge symmetry breaking accomplished by a background gauge field. The theory is shown to be equivalent to one with gauge symmetry breaking by orbifold boundary conditions — the two pictures are related by a non-periodic gauge transformation. This effective field theory possesses localized explicit breaking of SU(5) on one of the orbifold fixed points. Split multiplets on this fixed point are shown not to induce violations of unitarity in scattering amplitudes.
منابع مشابه
Supersymmetry breaking on orbifolds from Wilson lines ∗
We consider five dimensional theories compactified on the orbifold S 1 /Z 2 and prove that spontaneous local supersymmetry breaking by Wilson lines and by the Scherk-Schwarz mechanism are equivalent. Wilson breaking is triggered by the SU (2) R symmetry which is gauged in off-shell N = 2 supergravity by auxiliary fields. The super-Higgs mechanism disposes of the would-be Goldstinos which are ab...
متن کاملar X iv : h ep - t h / 01 07 24 5 v 2 1 6 A ug 2 00 2 LBNL - 48641 UCB - PTH - 01 / 27 Wilson Lines and Symmetry Breaking on Orbifolds
Gauge symmetry breaking by boundary conditions on a manifold is known to be equivalent to Wilson-line breaking through a background gauge field, and is therefore spontaneous. These equivalent pictures are related by a nonperiodic gauge transformation. However, we find that boundary condition gauge symmetry breaking on orbifolds is explicit; there is no gauge where all the breaking can be attrib...
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