Bound states of D(2p)-D0 systems supersymmetric p-cycles

We discuss some issues related to D(2p)-D0-branes with background magnetic fluxes, respectively, in a T-dual picture, Dp-Dp-branes at angles. In parti cular, we describe the nature of the supersymmetric bound states appearing after tachyon condensation. We present a very elementary derivation of the conditions to be satisfied by such general supersymmetric gauge configurati ons, which are simply related by T-duality to the conditions for supersymme tric p-cycles in C-p. (C) 2001 Elsevier Science B.V. All rights reserved.