A N=2 supersymmetric AdS(4) solution in M-theory with purely magnetic flux

We would like to thank Jerome Gauntlett, Dario Martelli, Achilleas Passias, Alessandro Tomasiello and Alberto Zaffaroni for useful discussions. This work has been partially supported by the COST Action MP1210 “The String Theory Universe”. Y.L. and J.M. are partially supported by the Spanish Ministry of Economy and Competitiveness grant FPA2012-35043-C02-02. J.M. is supported by the grant BES-2013-064815 of the same institution. He is grateful for the warm hospitality extended by the theoretical physics group at Milano-Bicocca U. where part of this work was done. N.T.M. is supported by INFN and by the European Research Council under the European Union’s Seventh Framework Program (FP/2007-2013) — ERC Grant Agreement n. 307286 (XD-STRING)