Superstring scattering from Dbranes
Abstract
We derive fully covariant expressions for all twopoint scattering amplitudes of two massless closed strings from a Dirichlet pbrane This construction relies on the observation that there is a simple relation between these Dbrane amplitudes in type II superstring theory and fourpoint scattering amplitudes for type I open superstrings. From the twopoint amplitudes, we derive the long range background fields for the Dbranes, and verify that as expected they correspond to those of extremally charged pbrane solutions of the low energy effective action.
 Publication:

Nuclear Physics B
 Pub Date:
 February 1996
 DOI:
 10.1016/05503213(96)003161
 arXiv:
 arXiv:hepth/9603194
 Bibcode:
 1996NuPhB.475..193G
 Keywords:

 High Energy Physics  Theory
 EPrint:
 33 pages, Latex, 4 figures