title: Six-Dimensional Superconformal Theories and their Compactifications from Type IIA Supergravity.
abstract: We describe three analytic classes of infinitely many AdS(d) supersymmetric solutions of massive IIA supergravity, for d=7,5,4. The three classes are related by simple universal maps. For example, the AdS(7)×M(3) solutions (where M(3) is topologically S(3)) are mapped to AdS(5)×Σ(2)×M(3)', where Σ(2) is a Riemann surface of genus g≥2 and the metric on M(3)' is obtained by distorting M(3) in a certain way. The solutions can have localized D6 or O6 sources, as well as an arbitrary number of D8-branes. The AdS(7) case (previously known only numerically) is conjecturally dual to an NS5-D6-D8 system. The field theories in three and four dimensions are not known, but their number of degrees of freedom can be computed in the supergravity approximation. The AdS(4) solutions have numerical "attractor" generalizations that might be useful for flux compactification purposes.
authors: Institut für Theoretische Physik, Leibniz Universität Hannover, Appelstraße 2, 30167 Hannover, Germany.
authors: Fabio
authors: F
authors: Apruzzi
authors: Physique Théorique et Mathématique, Université Libre de Bruxelles, Campus Plaine C.P. 231, B-1050 Bruxelles, Belgium and International Solvay Institutes, B-1050 Bruxelles, Belgium.
authors: Marco
authors: M
authors: Fazzi
authors: Dipartimento di Fisica, Università di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy and INFN, sezione di Milano-Bicocca, I-20126 Milano, Italy.
authors: Achilleas
authors: A
authors: Passias
authors: Dipartimento di Fisica, Università di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy and INFN, sezione di Milano-Bicocca, I-20126 Milano, Italy.
authors: Andrea
authors: A
authors: Rota
authors: Dipartimento di Fisica, Università di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy and INFN, sezione di Milano-Bicocca, I-20126 Milano, Italy.
authors: Alessandro
authors: A
authors: Tomasiello