The Expanding Zoo of Calabi-Yau Threefolds

Details The Expanding Zoo of Calabi-Yau Threefolds The Expanding Zoo of Calabi-Yau Threefolds

2011-03-16

arxiv.org/abs/1103.3156v2

Adv.High Energy Phys.2011:901898

Physics

High Energy Physics

High Energy Physics - Theory

24 pages, PDFLaTeX. To be published in the special issue "Computational Algebraic Geometry in String and Gauge Theory" of Adva

Scientific paper

10.1155/2011/901898

This is a short review of recent constructions of new Calabi-Yau threefolds with small Hodge numbers and/or non-trivial fundamental group, which are of particular interest for model-building in the context of heterotic string theory. The two main tools are topological transitions and taking quotients by actions of discrete groups. Both of these techniques can produce new manifolds from existing ones, and they have been used to bring many new specimens to the previously sparse corner of the Calabi-Yau zoo where both Hodge numbers are small. Two new manifolds are also obtained here from hyperconifold transitions, including the first example with fundamental group S3, the smallest non-Abelian group.

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