2006/11/30 by Mohammad R. Garousi · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2006.12.007
published as Nucl.Phys.B765:166-184,2007 · 22 pages, no figure, latex file, v2: minor corrections, version to appear in Nucl. Phys. B
openalex publication_date 2006/12/21 · arxiv created 2007/01/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We write the vertex operators of massless NS-NS and RR states of Type II superstring theory in the presence of Orientifold p-planes. They include the usual vertex operators of Type II theory and their images. We then calculate the two-point functions of these vertex operators at the projective plane PR2 level. We show that the result can be written in the Veneziano-type formulae, with the same kinematic factor that appears in the Dp-branes amplitudes. While the scattering amplitudes with the usual vertex operators are not gauge invariant, the above amplitudes are invariant. From the amplitude describing scattering of two NS-NS states off the O-plane, we find the low energy effective action of O-planes. The result shows a relative factor 2p-6 between couplings to O-planes and to D-branes at (α')2 order.