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arXiv · hep-th/0212221

Torus-Fibered Calabi-Yau Threefolds with Non-Trivial Fundamental Group

Burt A. Ovrut·Tony Pantev·Rene Reinbacher
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Abstract

We construct smooth Calabi-Yau threefolds Z, torus-fibered over a dP_9 base, with fundamental group Z_2 X Z_2. To do this, the structure of rational elliptic surfaces is studied and it is shown that a restricted subset of such surfaces admit at least a Z_2 X Z_2 group of automorphisms. One then constructs Calabi-Yau threefolds X as the fiber product of two such dP_9 surfaces, demonstrating that the involutions on the surfaces lift to a freely acting Z_2 X Z_2 group of automorphisms on X. The threefolds Z are then obtained as the quotient Z=X/(Z_2 X Z_2). These Calabi-Yau spaces Z admit stable, holomorphic SU(4) vector bundles which, in conjunction with Z_2 X Z_2 Wilson lines, lead to standard-like models of particle physics with naturally suppressed nucleon decay.

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Burt A. Ovrut, Tony Pantev, Rene Reinbacher. 2003-02-27. Torus-Fibered Calabi-Yau Threefolds with Non-Trivial Fundamental Group. https://doi.org/10.1088/1126-6708%2F2003%2F05%2F040

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