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Título del libro: Handbook Of Quantum Gravity
Título del capítulo: Heterotic orbifold models

Autores UNAM:
SAUL NOE RAMOS SANCHEZ;
Autores externos:

Idioma:

Año de publicación:
2024
Palabras clave:

Compactification; Gauge group; Heterotic strings; Phenomenology; Standard model gauge; String compactification; String models; Symmetry of string model; The standard model; Three generations; String theory


Resumen:

We review efforts in string model building, focusing on the heterotic orbifold compactifications. We survey how one can, starting from an explicit string theory, obtain models which resemble Nature. These models exhibit the standard model gauge group, three generations of standard model matter, and an appropriate Higgs sector. Unlike many unified models, these models do not suffer from problems such as doublet-triplet splitting, too rapid proton decay, and the µ problem. Realistic patterns of fermion masses emerge, which are partly explained by flavor symmetries, including their modular variants. We comment on challenges and open questions. © Springer Nature Singapore Pte Ltd. 2024. All rights reserved.


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