Notes on Local Grand Unification *
نویسنده
چکیده
Grand unified models in four dimensions typically suffer from the doublet-triplet splitting problem. This obstacle can be overcome in higher-dimensional settings, where a non-trivial gauge group topography can explain the simultaneous appearance of complete standard model generations in the form of 16-plets of SO(10) and the Higgs fields as split multiplets. In these notes, the emerging scheme of ‘local grand unification’ and its realization in the context of orbifold compactifications of the heterotic string are reviewed. Based on lectures given at the Summer Institute 2007, Fuji-Yoshida, Japan. The slides can be found at http://wwwhep.s.kanazawa-u.ac.jp/SI2007/slides/ratz.pdf.
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تاریخ انتشار 2007