What have we learned from two-dimensional models of quantum black holes?

Details What have we learned from two-dimensional models of quantum black holes? What have we learned from two-dimensional models of quantum black holes?

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994gregr..26...13t&link_type=abstract

General Relativity and Gravitation, Volume 26, Issue 1, pp.13-19

Computer Science

2

Scientific paper

The two-dimensional black hole provides a theoretical laboratory in which the quantum nature of black holes may be probed without the complications of four-dimensional dynamics. It is therefore natural to ask, what have we learned from this model? Much recent work has focused on the semi-classical limit where the black hole is similar to the Schwarzschild solution. However, in this essay, we demonstrate that theexact two-dimensional quantum black hole is non-singular. Instead the singularity is replaced by a surface of time reflection symmetry in an extended space-time. The maximally extended space-time thus consists of an infinite sequence of asymptotically flat regions connected by timelike wormholes, rather analogous to the Reissner-Nordström space-time. The implications of this to the apparent loss of quantum information arising from black hole evaporation are also briefly discussed.

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