{ "id": "0910.2576", "version": "v1", "published": "2009-10-14T10:10:14.000Z", "updated": "2009-10-14T10:10:14.000Z", "title": "Open and Closed String Vertices for branes with magnetic field and T-duality", "authors": [ "I. Pesando" ], "comment": "63 pages, 7 figures", "journal": "JHEP 1002:064,2010", "doi": "10.1007/JHEP02(2010)064", "categories": [ "hep-th" ], "abstract": "We discuss carefully the vertices which describe the dipole open strings and closed strings on a D-brane with magnetic flux on a torus. Translation invariance along closed cycles forces surprisingly closed string vertices written in open string formalism to acquire Chan-Paton like matrices. Moreover the one loop amplitudes have a single trace for the part of gauge group with the magnetic flux. These peculiarities are also required by consistency of the action of T-duality in the open string sector. In this way we can show to all orders in perturbation theory the equivalence of the T-dual open string theories, gravitational interactions included. We provide also a new and direct derivation of the bosonic boundary state in presence of constant magnetic and Kalb-Ramond background based on Sciuto-Della Selva-Saito vertex formalism.", "revisions": [ { "version": "v1", "updated": "2009-10-14T10:10:14.000Z" } ], "analyses": { "keywords": [ "magnetic field", "open string", "closed string vertices written", "cycles forces", "surprisingly closed string vertices" ], "tags": [ "journal article" ], "publication": { "publisher": "Springer", "journal": "Journal of High Energy Physics", "year": 2010, "month": "Feb", "volume": 2010, "pages": 64 }, "note": { "typesetting": "TeX", "pages": 63, "language": "en", "license": "arXiv", "status": "editable", "inspire": 833889, "adsabs": "2010JHEP...02..064P" } } }