{ "id": "0804.4301", "version": "v1", "published": "2008-04-27T22:35:17.000Z", "updated": "2008-04-27T22:35:17.000Z", "title": "Null structure and almost optimal local well-posedness of the Maxwell-Dirac system", "authors": [ "Piero D'Ancona", "Damiano Foschi", "Sigmund Selberg" ], "comment": "53 pages, 2 figures", "categories": [ "math.AP" ], "abstract": "We uncover the full null structure of the Maxwell-Dirac system in Lorenz gauge. This structure, which cannot be seen in the individual component equations, but only when considering the system as a whole, is expressed in terms of tri- and quadrilinear integral forms with cancellations measured by the angles between spatial frequencies. In the 3D case, we prove frequency-localized $L^2$ space-time estimates for these integral forms at the scale invariant regularity up to a logarithmic loss, hence we obtain almost optimal local well-posedness of the system by iteration.", "revisions": [ { "version": "v1", "updated": "2008-04-27T22:35:17.000Z" } ], "analyses": { "subjects": [ "35Q40", "35L70" ], "keywords": [ "optimal local well-posedness", "maxwell-dirac system", "individual component equations", "quadrilinear integral forms", "scale invariant regularity" ], "note": { "typesetting": "TeX", "pages": 53, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2008arXiv0804.4301D" } } }