1999/10/31 by Donam Youm
Physics and Astronomy · #Black Holes and Theoretical Physics #Black brane #Black hole (networking) #Black hole thermodynamics #Charged black hole #Cosmology and Gravitation Theories #Dilaton #Entropy (arrow of time) #Extremal black hole #Hawking radiation #Mathematical physics #Micro black hole #Noncommutative and Quantum Gravity Theories #Physics #Theoretical physics #Thermodynamics #White hole #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevd.61.044013
published as Phys.Rev. D61 (2000) 044013 · 15 pages, LaTeX, added references
arxiv created 1999/11/02 · openalex publication_date 2000/01/27 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We relate various black hole solutions in the near-horizon region to black hole solutions in two-dimensional dilaton gravity theories in order to argue that the thermodynamics of black holes in D>~4 can be effectively described by the thermodynamics of black holes in two-dimensional dilaton gravity theories. We show that the Bekenstein-Hawking entropies of single-charged dilatonic black holes and dilatonic p branes with an arbitrary dilaton coupling parameter in arbitrary spacetime dimensions are exactly reproduced by the Bekenstein-Hawking entropy of the two-dimensional black hole in the associated two-dimensional dilaton gravity model. We comment that the thermodynamics of a nonextreme stringy four-dimensional black hole with four charges and a five-dimensional black hole with three charges may be effectively described by the thermodynamics of black hole solutions with a constant dilaton field in two-dimensional dilaton gravity theories.