Abstract
Quantum mechanics on the moduli space of N supersymmetric
Reissner-Nordstrom black holes is shown to admit 4 supersymmetries
using an unconventional supermultiplet which contains 3N bosons and
4N fermions. A near-horizon limit is found in which the quantum
mechanics of widely separated black holes decouples from that of
strongly-interacting, near-coincident black holes. This near-horizon
theory is shown to have an enhanced D(2,1;0) superconformal
symmetry. The bosonic symmetries are SL(2,
)
conformal symmetry and SU(2) × SU(2)
R-symmetry arising from spatial rotations and the R-symmetry of
= 2 supergravity.
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