2003/05/31 by Abhay Ashtekar, Alejandro Corichi · 5 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Noncommutative and Quantum Gravity Theories #Quantum Electrodynamics and Casimir Effect #gr-qc #hep-th
paper · pdf · doi:10.1088/0264-9381/20/20/310
published as Class.Quant.Grav. 20 (2003) 4473-4484 · 14 pages, no figures, revtex4. Section III expanded and typos corrected
arxiv created 2003/08/20 · openalex publication_date 2003/09/12 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
The black-hole entropy calculation for type I isolated horizons, based on loop quantum gravity, is extended to include non-minimally coupled scalar fields. Although the non-minimal coupling significantly modifies quantum geometry, the highly non-trivial consistency checks for the emergence of a coherent description of the quantum horizon continue to be met. The resulting expression of black-hole entropy now depends also on the scalar field precisely in the fashion predicted by the first law in the classical theory (with the same value of the Barbero–Immirzi parameter as in the case of minimal coupling).