Heterotic GUT and standard model vacua from simply connected Calabi-Yau manifolds

• Verfasst von: Blumenhagen, Ralph [VerfasserIn]
• Verfasst von: Moster, Sebastian [VerfasserIn]
• Verfasst von: Weigand, Timo [VerfasserIn]
• Titel: Heterotic GUT and standard model vacua from simply connected Calabi-Yau manifolds
• Verf.angabe: Ralph Blumenhagen, Sebastian Moster, Timo Weigand
• Umfang: 36 S.
• Fussnoten: Gesehen am 09.01.2018
• Titel Quelle: Enthalten in: Nuclear physics <Amsterdam> / B
• Jahr Quelle: 2006
• Band/Heft Quelle: 751(2006), 1, S. 186-221
• ISSN Quelle: 1873-1562
• DOI: doi:10.1016/j.nuclphysb.2006.06.005
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1566973635

Abstract

We consider four-dimensional supersymmetric compactifications of the E8×E8 heterotic string on Calabi-Yau manifolds endowed with vector bundles with structure group SU(N)×U(1) and five-branes. After evaluating the Green-Schwarz mechanism and deriving the generalized Donaldson-Uhlenbeck-Yau condition including the five-brane moduli, we show that this construction can give rise to GUT models containing U(1) factors like flipped SU(5) or directly the Standard Model even on simply connected Calabi-Yau manifolds. Concrete realizations of three-generation models on elliptically fibered Calabi-Yau manifolds are presented. They exhibit the most attractive features of flipped SU(5) models such as doublet-triplet splitting and proton stability. In contrast to conventional GUT string models, the tree level relations among the Standard Model gauge couplings at the GUT scale are changed.