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arXiv · hep-th/9902160

Brane Transfer Operations and T-Duality of Non-BPS States

Oren Bergman·Eric G. Gimon·Petr Horava
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Abstract

Using the relation between D-brane charges and K-theory, we study non-BPS D-branes and their behavior under T-duality. We point out that in general compactifications, D-brane charges are classified by relative K-theory groups. T-duality is found to act as a symmetry between the relative K-theory groups in Type II and Type I/IA theories. We also study Type \tilde\IA theory (which contains an O8^- plane and an O8^+ plane), using K-theory and T-duality to identify its stable D-branes. Comparison with string theory constructions reveals two interesting effects. One of them involves the transfer of branes between O-planes, while in the other, a D-brane charge which seems conserved near one O-plane in fact decays due to the presence of another type of O-plane.

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Oren Bergman, Eric G. Gimon, Petr Horava. 1999-04-05. Brane Transfer Operations and T-Duality of Non-BPS States. https://doi.org/10.1088/1126-6708%2F1999%2F04%2F010

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