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arXiv · hep-th/0102018

Torsion D-Branes in Nongeometrical Phases

Ilka Brunner·Jacques Distler
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Abstract

In a geometrical background, D-brane charge is classified by topological K-theory. The corresponding classification of D-brane charge in an arbitrary, nongeometrical, compactification is still a mystery. We study D-branes on non-simply-connected Calabi-Yau 3-folds, with particular interest in the D-branes whose charges are torsion elements of the K-theory. We argue that we can follow the D-brane charge through the nongeometrical regions of the Kahler moduli space and, as evidence, explicitly construct torsion D-branes at the Gepner point in some examples. In one of our examples, the Gepner theory is a nonabelian orbifold of a tensor product of minimal models, and this somewhat exotic situation seems to be essential to the physics.

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Ilka Brunner, Jacques Distler. 2001-02-05. Torsion D-Branes in Nongeometrical Phases. https://arxiv.org/abs/hep-th/0102018

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