2002/06/30 by Hugo Garcia-Compean, Hugo García‐Compeán, Oscar Loaiza‐Brito +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Pulsars and Gravitational Waves Research #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2004.06.015
published as Nucl.Phys. B694 (2004) 405-442 · 47 pages, latex, no figures. v4: Typos corrected, exposition improved. Main conclusions unchanged. To be published in Nuclear Physics B
arxiv created 2004/05/20 · openalex publication_date 2004/07/06 · arxiv updated 2010/04/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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^± 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.