black hole in anti-de Sitter spacetime
Urs Schreiber
These are solutions to Einstein's equations which are black holes in spacetimes that far away from the black hole are asymptotic (not to Minkowski spacetime but) to anti de Sitter spacetime.
Under the AdS-CFT correspondence black holes in the anti-de Sitter spacetime translate to the conformal field theory on the asymptotic boundary being at positive temperature (e.g. Duff 99, section 6, Natsuume 15, section 7).
Original articles:
Review:
Mike Duff, section 6 of TASI Lectures on Branes, Black...