Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1998-01-29
JHEP 9802:014,1998
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
5 pages, harvmac. v2: reference added
Scientific paper
10.1088/1126-6708/1998/02/014
Quantum gravity in 2+1 dimensions with a positive cosmological constant can be represented as an SL(2,C) Chern-Simons gauge theory. The symmetric vacuum of this theory is a degenerate configuration for which the gauge fields and spacetime metric vanish, while de Sitter space corresponds to a highly excited thermal state. Carlip's approach to black hole entropy can be adapted in this context to determine the statistical entropy of de Sitter space. We find that it equals one-quarter the area of the de Sitter horizon, in agreement with the semiclassical formula.
Maldacena Juan M.
Strominger Andrew
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