Supermultiplets of AdS black holes in 2+1 dimensions

We construct super AdS black holes in 2 + 1 dimensions in terms of Chern Si mons gauge theory of N = (1,1) super AdS group coupled to a (super)source. We take the source to be a super AdS state specified by its Casimir invaria nts. We show that the corresponding space-time is a supermultiplet of AdS s pace-times related to each other by supersymmetry transformations. We give explicit expressions for the masses and the angular moments of the black ho les in a supermultiplet. With one exception, for N=(1,1) one pair of extrem al black holes can be accommodated in such all-black hole supermultiplets. The requirement that the source be a unitary representation leads to a disc rete tower of excited states which provide a microscopic model for the supe r black hole. (C) 1998 Elsevier Science B.V. All rights reserved.