%0 Journal Article
%T Quantum Gravity in 2+1 Dimensions: The Case of a Closed Universe
%A Carlip Steven
%J Living Reviews in Relativity
%D 2005
%I Max-Planck Institute for Gravitational Physics
%X In three spacetime dimensions, general relativity drastically simplifies, becoming a "topological" theory with no propagating local degrees of freedom. Nevertheless, many of the difficult conceptual problems of quantizing gravity are still present. In this review, I summarize the rather large body of work that has gone towards quantizing (2+1)-dimensional vacuum gravity in the setting of a spatially closed universe.
%K 2+1 gravity
%K quantum gravity
%K quantum cosmology
%U http://www.livingreviews.org/lrr-2005-1