4.4 Article

Heterotic line bundle models on generalized complete intersection Calabi Yau manifolds

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JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 5, 页码 -

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SPRINGER
DOI: 10.1007/JHEP05(2021)105

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Compactification and String Models; Superstring Vacua; Superstrings and Heterotic Strings

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The systematic program of heterotic line bundle model building has produced a wealth of standard-like models (SLM) for particle physics. Continuing this work in the setting of generalised Complete Intersection Calabi Yau (gCICY) manifolds, the study identifies two geometries suitable for heterotic GUT models. These gCICYs have freely acting Z(2) symmetry groups, enabling Wilson line breaking of the GUT gauge group to that of the standard model. Additionally, a systematic scan over line bundle sums over these geometries resulted in 99 and 33 SLMs, respectively, comparable to homotopically equivalent Complete Intersection Calabi Yau manifolds.
The systematic program of heterotic line bundle model building has resulted in a wealth of standard-like models (SLM) for particle physics. In this paper, we continue this work in the setting of generalised Complete Intersection Calabi Yau (gCICY) manifolds. Using the gCICYs constructed in ref. [1], we identify two geometries that, when combined with line bundle sums, are directly suitable for heterotic GUT models. We then show that these gCICYs admit freely acting Z(2) symmetry groups, and are thus amenable to Wilson line breaking of the GUT gauge group to that of the standard model. We proceed to a systematic scan over line bundle sums over these geometries, that result in 99 and 33 SLMs, respectively. For the first class of models, our results may be compared to line bundle models on homotopically equivalent Complete Intersection Calabi Yau manifolds. This shows that the number of realistic configurations is of the same order of magnitude.

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