Stable bundle extensions on elliptic Calabi-Yau threefolds

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We construct stable bundle extensions on elliptically fibered Calabi-Yau threefolds. We show that these bundles can solve the topological anomaly constraint in heterotic string theory without the need of invoking background fivebranes.
18 pages, minor changes

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Algebraic Geometry, High Energy Physics - Theory, 14J60, 14J32, 81T30, 83E30

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http://salesiana.dossiersoluciones.com/handle/123456789/195017

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0611762
 http://arxiv.org/abs/math/0611762
 J.Geom.Phys.57:2249-2262,2007
 doi:10.1016/j.geomphys.2007.07.007

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arXiv