Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2003-05-12
Class.Quant.Grav. 20 (2003) 3413-3426
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
14 pages, 1 figure, revtex4. References and minor clarifications added
Scientific paper
10.1088/0264-9381/20/15/310
The isolated horizon framework is extended to include non-minimally coupled scalar fields. As expected from the analysis based on Killing horizons, entropy is no longer given just by (a quarter of) the horizon area but also depends on the scalar field. In a subsequent paper these results will serve as a point of departure for a statistical mechanical derivation of entropy using quantum geometry.
Ashtekar Abhay
Corichi Alejandro
Sudarsky Daniel
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