Notes on Local Grand Unification

Michael Ratz

Notes on Local Grand Unification

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arxiv 0711.1582 v1 pith:PYOJMF3C submitted 2007-11-10 hep-ph hep-th

Notes on Local Grand Unification

Michael Ratz This is my paper

classification hep-ph hep-th

keywords grandlocalnotesunificationappearancecompactificationscompletecontext

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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.

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