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arXiv · hep-th/9602032

Asymmetric Orbifolds and Higher Level Models

Jens Erler
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Abstract

I introduce a class of string constructions based on asymmetric orbifolds leading to level two models. In particular, I derive in detail various models with gauge groups $E_6$ and SO(10), including a four generation $E_6$ model with two adjoint representations. The occurrence of multiple adjoint representations is a generic feature of the construction. In the course of describing this approach, I will address the problem of twist phases in higher twisted sectors of asymmetric orbifolds.

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Jens Erler. 1996-11-29. Asymmetric Orbifolds and Higher Level Models. https://doi.org/10.1016/0550-3213(96)00305-7

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