Dynamics of Asymptotic Diffeomorphisms in (2+1)-Dimensional Gravity

Details Dynamics of Asymptotic Diffeomorphisms in (2+1)-Dimensional Gravity Dynamics of Asymptotic Diffeomorphisms in (2+1)-Dimensional Gravity

2005-01-10

arxiv.org/abs/gr-qc/0501033v4

Class.Quant.Grav.22:3055-3060,2005

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, LaTeX; v2: slightly expanded discussion of implications, more references; v3: more explicit comparison to Chern-Simon

Scientific paper

10.1088/0264-9381/22/14/014

In asymptotically anti-de Sitter gravity, diffeomorphisms that change the
conformal boundary data can be promoted to genuine physical degrees of freedom.
I show that in 2+1 dimensions, the dynamics of these degrees of freedom is
described by a Liouville action, with the correct central charge to reproduce
the entropy of the BTZ black hole.

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