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arXiv · hep-th/9508073

Grand Unification with Three Generations in Free Fermionic String Models

D. Finnell
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Abstract

We examine the problem of constructing three generation free fermionic string models with grand unified gauge groups. We attempt the construction of $G\times G$ models, where $G$ is a grand unified group realized at level 1. This structure allows those Higgs representations to appear which are necessary to break the symmetry down to the standard model gauge group. For $G=SO(10)$, we find only models with an even number of generations. However, for $G=SU(5)$ we find a number of 3 generation models.

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D. Finnell. 1996-06-04. Grand Unification with Three Generations in Free Fermionic String Models. https://doi.org/10.1103/physrevd.53.5781

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