Superconformal mechanics of AdS(2) D-brane boundstates

We explicitly construct a family of N = 4 superconformal mechanics of dyonic particles, generalizing the work of Anninos et al. [1] to an arbitrary number of particles. These mechanics are obtained from a scaling limit of the effective Coulomb branch description of N = 4 quiver quantum mechanics describing D-branes in type II Calabi-Yau compactifications. In the supergravity description of these D-branes this limit changes the asymptotics to AdS(2)xS(2)xCY(3). We exhibit the D(1, 2; 0) superconformal symmetry and conserved charges of the mechanics in detail. In addition we present an alternative formulation as a sigma model on a hyperkahler manifold with torsion.