Comments on N=4 Superconformal Extension of the Calogero Model

Abstract

Recently it was conjectured by Gibbons and Townsend that the large n limit of an N=4 superconformal extension of the n-particle Calogero model might provide a microscopic description of the extreme Reissner-Nordstrom black hole near the horizon. In this paper a possibility to construct an SU(1,1|2) invariant extension of the Calogero model is considered. We treat in detail the two-particle case and comment on some peculiarities intrinsic to n>2 generalizations.

6 pages, LaTex, no figures, concluding remarks revised, one reference and acknowledgements added

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