Instantons on D7 brane probes and AdS/CFT with flavour

Recent work on adding flavour to the generalized AdS/CFT correspondence is reviewed. In particular, we consider instanton configurations on two coincident D7 brane probes. These are matched to the Higgs branch of the dual field theory. In AdS(5) X S-5, the instanton generates a flow of the meson spectrum. For non-supersymmetric gravity backgrounds, the Higgs branch is lifted by a potential with non-trivial physical implications. Based on talk given by J. Erdmenger. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.