Non-supersymmetric heterotic model building

Blaszczyk, Michael; Groot Nibbelink, Stefan; Loukas, Orestis and Ramos-Sanchez, Saul (2014): Non-supersymmetric heterotic model building. In: Journal of High Energy Physics, No. 10, 119

Abstract

We investigate orbifold and smooth Calabi-Yau compactifications of the non-supersymmetric heterotic SO(16)×SO(16) string. We focus on such Calabi-Yau backgrounds in order to recycle commonly employed techniques, like index theorems and cohomology theory, to determine both the fermionic and bosonic 4D spectra. We argue that the N=0 theory never leads to tachyons on smooth Calabi-Yaus in the large volume approximation. As twisted tachyons may arise on certain singular orbifolds, we conjecture that such tachyonic states are lifted in the full blow-up. We perform model searches on selected orbifold geometries. In particular, we construct an explicit example of a Standard Model-like theory with three generations and a single Higgs field.

• Item Type: Journal article
• Form of publication: Publisher's Version
• Keywords: Strings; branes phenomenology
• Faculties: Physics
• Subjects: 500 Science > 530 Physics
• ISSN: 1029-8479
• Alliance/National Licence: This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
• Annotation: SCOAP3-Publikation. - Weitere Autoren siehe PDF-Volltext. - ArXiv ePrint: 1407.​6362
• Language: English