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arXiv · hep-th/0112065

Gravitational couplings of orientifold planes

P. Henry-Labordere·B. Julia
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Abstract

We reanalyse the gravitational couplings of the perturbative orientifold planes $Op^-$, $Op^+$ (and D-branes). We first compute their $D_{-1}$ instantonic corrections for $p=3$. Then, by using U-dualities, we obtain the Wess-Zumino terms of orientifolds with RR flux for $p \leq 5$. The expressions for the effective actions can be partially checked via M-theory. We point out a previous oversimplification and we show in fact that the difficulty still stands in the way of the full computation of 7 Brane instanton corrections.

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P. Henry-Labordere, B. Julia. 2001-12-30. Gravitational couplings of orientifold planes. https://doi.org/10.1088/1126-6708%2F2002%2F01%2F033

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