Compactifications of the heterotic string with unitary bundles
We describe a large new class of four-dimensional supersymmetric string vacua defined as compactifications of the E8 × E8 and the SO(32) heterotic string on smooth Calabi-Yau threefolds with unitary gauge bundles and heterotic five-branes. The conventional gauge symmetry breaking via Wilson lines is...
Gespeichert in:
| 1. Verfasser: | |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
1 September 2006
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| In: |
Fortschritte der Physik
Year: 2006, Jahrgang: 54, Heft: 11, Pages: 963-1077 |
| ISSN: | 1521-3978 |
| DOI: | 10.1002/prop.200610327 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1002/prop.200610327 Verlag, Volltext: http://onlinelibrary.wiley.com/doi/10.1002/prop.200610327/abstract 
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| Verfasserangaben: | Timo Weigand |
MARC
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| 520 | |a We describe a large new class of four-dimensional supersymmetric string vacua defined as compactifications of the E8 × E8 and the SO(32) heterotic string on smooth Calabi-Yau threefolds with unitary gauge bundles and heterotic five-branes. The conventional gauge symmetry breaking via Wilson lines is replaced by the embedding of non-flat line bundles into the ten-dimensional gauge group, thus opening up the way for phenomenologically interesting string compactifications on simply connected manifolds. After a detailed analysis of the four-dimensional effective theory we exemplify the general framework by means of a couple of explicit examples involving the spectral cover construction of stable holomorphic bundles. As for the SO(32) heterotic string, the resulting vacua can be viewed, in the S-dual Type I picture, as a generalisation of magnetized D9/D5-brane models. In the case of the E8 × E8 string, we find a natural way to construct realistic MSSM-like models, either directly or via a flipped SU(5) GUT scenario. | ||
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