Fixed scalars and suppression of Hawking evaporation

1996/08/20 by Barak Kol, Arvind Rajaraman · 4 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Quantum Electrodynamics and Casimir Effect #gr-qc #hep-th

paper · pdf · doi:10.1103/physrevd.56.983

published as Phys.Rev. D56 (1997) 983-986 · 10 pages, latex

arxiv created 1996/08/20 · openalex publication_date 1997/07/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

For an extreme charged black hole some scalars take on a fixed value at the horizon determined by the charges alone. We call them fixed scalars. We find the absorption cross section for a low-frequency wave of a fixed scalar to be proportional to the square of the frequency. This implies a strong suppression of the Hawking radiation near extremality. We compute the coefficient of proportionality for a specific model.

Citations

• Microscopic Origin of the Bekenstein-Hawking Entropy
• Vacuum polarization and the spontaneous loss of charge by black holes

Cited by

• String theory and classical absorption by three-branes
• No absorption in de Sitter space
• Scalar absorption and the breaking of the world-volume conformal invariance
• Intermediate scalars and the effective string model of black holes