M. Cadoni et M. Cavaglia, Two-dimensional black holes as open strings: a new realization of the ADS/CFT correspondence, PHYS LETT B, 499(3-4), 2001, pp. 315-320
We show that weak-coupled two-dimensional dilaton gravity on anti-de Sitter
space can be described by the dynamics of an open string. Neumann and Diri
chlet boundary conditions for the string lead to two different realizations
of the anti-de Sitter/Conformal Field Theory correspondence. In particular
, in the Dirichlet case the thermodynamical entropy of two-dimensional blac
k holes can be exactly reproduced by counting the string states. (C) 2001 E
lsevier Science B.V. All rights reserved.