{ "id": "hep-th/0206183", "version": "v4", "published": "2002-06-19T23:53:47.000Z", "updated": "2004-05-20T10:12:20.000Z", "title": "Branes and Fluxes in Orientifolds and K-theory", "authors": [ "Hugo Garcia-Compean", "Oscar Loaiza-Brito" ], "comment": "47 pages, latex, no figures. v4: Typos corrected, exposition improved. Main conclusions unchanged. To be published in Nuclear Physics B", "journal": "Nucl.Phys. B694 (2004) 405-442", "doi": "10.1016/j.nuclphysb.2004.06.015", "categories": [ "hep-th" ], "abstract": "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 $Op^\\pm$ 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.", "revisions": [ { "version": "v4", "updated": "2004-05-20T10:12:20.000Z" } ], "analyses": { "keywords": [ "orientifold planes", "atiyah-hirzebruch spectral sequence", "global gauge anomalies", "lower dimensional systems", "rr fields" ], "tags": [ "journal article" ], "publication": { "publisher": "Elsevier", "journal": "Nuclear Physics B", "year": 2004, "month": "Aug", "volume": 694, "number": 3, "pages": 405 }, "note": { "typesetting": "LaTeX", "pages": 47, "language": "en", "license": "arXiv", "status": "editable", "inspire": 588899, "adsabs": "2004NuPhB.694..405G" } } }