Anomalous D-brane and orientifold couplings from the boundary state
arXiv:hep-th/9808074 · doi:10.1016/S0370-2693(98)01438-5
Abstract
We compute scattering amplitudes involving both R-R and NS-NS fields in the presence of a D-brane or orientifold plane. These provide direct evidence for the anomalous couplings in the D-brane and orientifold actions. The D9-brane and O9-plane are found to couple to the first Pontrjagin class with the expected relative strength.
13 pages, latex, no figures, proposal to fix factor of 2 added, minor corrections, reference added, version to be published in Phys. Lett. B