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arXiv · hep-th/0206183

Branes and Fluxes in Orientifolds and K-theory

Hugo Garcia-Compean·Oscar Loaiza-Brito
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Abstract

RR fields in string backgrounds including orientifold planes and branes on top of them are classified by K-theory. Following the idea introduced in hep-th/0103183, we also classify such fluxes by cohomology. Both of them are compared through the Atiyah-Hirzebruch Spectral Sequence. Some new correlations between branes on orientifold planes $Op^\pm$ and obstructions to the existence of some branes are found. Finally, we find a topological condition that avoid the presence of global gauge anomalies in lower dimensional systems.

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Hugo Garcia-Compean, Oscar Loaiza-Brito. 2004-05-20. Branes and Fluxes in Orientifolds and K-theory. https://doi.org/10.1016/j.nuclphysb.2004.06.015

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