Towards Classification of \(\mathcal{N}=1\) and \(\mathcal{N}=0\) Flipped \(SU(5)\) Asymmetric \(\mathbb{Z}_2 \times \mathbb{Z}_2\) Heterotic String Orbifolds

The free fermionic classification method provides a powerful tool to investigate string vacua, which led to the discovery of spinor--vector duality and exophobic string models. We extend the classification methodology to both \(\mathcal{N}=1\) and \(\mathcal{N}=0\) Flipped \(SU(5)\) \(\mathbb{Z}_2 \...

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Veröffentlicht in:arXiv.org 2022-08
Hauptverfasser: Faraggi, Alon E, Matyas, Viktor G, Percival, Benjamin
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description The free fermionic classification method provides a powerful tool to investigate string vacua, which led to the discovery of spinor--vector duality and exophobic string models. We extend the classification methodology to both \(\mathcal{N}=1\) and \(\mathcal{N}=0\) Flipped \(SU(5)\) \(\mathbb{Z}_2 \times \mathbb{Z}_2\) heterotic string orbifolds with asymmetric shifts. The impact of the asymmetric assignments on the phenomenological characteristics of these models is investigated. Of particular interest is the analysis of untwisted moduli fixing for various choices of asymmetric boundary conditions. Two classes of vacua with different characteristics are systematically investigated with help from SAT/SMT algorithms, which are shown to increase search efficiency by up to two orders of magnitude, as well as providing useful tools to find contradictions between various phenomenological criteria. The general form of the partition function for the space of models is explained and given for two specific example models for different choices of asymmetric boundary conditions. Additionally, the distribution of one-loop cosmological constant contributions for samples in the two different classes of models are depicted and discussed.
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subjects Algorithms
Astronomical models
Boundary conditions
Classification
Cosmological constant
Partitions (mathematics)
Strings
title Towards Classification of \(\mathcal{N}=1\) and \(\mathcal{N}=0\) Flipped \(SU(5)\) Asymmetric \(\mathbb{Z}_2 \times \mathbb{Z}_2\) Heterotic String Orbifolds
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