Máximo Bañados co-developed the BTZ black hole with Claudio Teitelboim and Jorge Zanelli in 1992. It showed that three-dimensional gravity with a negative cosmological constant admits black-hole states characterized by conserved quantities and horizons.[ref]
This supplied a simpler setting for investigating global gravitational and thermodynamic questions without assuming that all black-hole phenomena require four-dimensional spacetime.
New to topics? Read the docs here!