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arXiv · 2310.11512

Non-geometric BPS branes on T-folds

Massimo Bianchi·Guillaume Bossard
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Abstract

We give a detailed (microscopic) description of the geometric and non-geometric fundamental branes and their bound states in Type II superstring compactifications preserving N=6 supersymmetry. We consider general boundary states that couple to the twisted sector and compute the relevant annulus amplitudes. We check consistency of the construction by relating the transverse channel, corresponding to closed-string tree-level exchange, with the direct open-string loop channel. Focussing on the Type IIA frame, we show that D0-D4 have the expected tension for a geometric brane, while the non-geometric D2-D6 boundary states have a tension equal to $1/\sqrt{K}$ the one of a geometric brane for the $\mathbb{Z}_K$ orbifold. This is consistent with Fricke T-duality of the N=6 model.

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Massimo Bianchi, Guillaume Bossard. 2023-10-17. Non-geometric BPS branes on T-folds. https://arxiv.org/abs/2310.11512

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