Black Holes and Superconformal Mechanics
  The dynamics of a (super)particle near the horizon of an extreme Reissner-Nordstrom black hole is shown to be governed by an action that reduces to a (super)conformal mechanics model in the limit of large black hole mass. 
P. Claus, M. Derix, R. Kallosh, J. Kumar, P.K. Townsend, and A. Van   Proeyen