Abstract
We formulate N=2 supersymmetric GUTs in a six-dimensional spacetime, studying in particular the spontaneous breaking of gauge invariance and the construction of massive gauge multiplets. In six dimensions the photon and gluons are associated with a Weyl photino and Weyl gluinos; the massive W±, with two Dirac Winos and three spin-0 Higgs bosons; the massive Z, with one Dirac Zino and three neutral Higgs bosons. The X ± 4 3 is massless, and the Y ± 1 3 has the same mass as the W +-. The grand-unification mass, generated by the breaking of the 6D Poincaré invariance, is associated with the large momenta carried by the grand-unification gauge bosons along the new compact dimensions.
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