Asymmetric Gepner Models II. Heterotic Weight Lifting

Details Asymmetric Gepner Models II. Heterotic Weight Lifting Asymmetric Gepner Models II. Heterotic Weight Lifting

2010-09-07

arxiv.org/abs/1009.1320v1

Physics

High Energy Physics

High Energy Physics - Theory

46 pages, 17 figures

Scientific paper

A systematic study of "lifted" Gepner models is presented. Lifted Gepner models are obtained from standard Gepner models by replacing one of the N=2 building blocks and the $E_8$ factor by a modular isomorphic $N=0$ model on the bosonic side of the heterotic string. The main result is that after this change three family models occur abundantly, in sharp contrast to ordinary Gepner models. In particular, more than 250 new and unrelated moduli spaces of three family models are identified. We discuss the occurrence of fractionally charged particles in these spectra.

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