1999/07/31 by Shahar Hod · 2 citations
Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Black Holes and Theoretical Physics #Black hole (networking) #Black hole thermodynamics #Charged black hole #Classical mechanics #Cosmic censorship hypothesis #Cosmology and Gravitation Theories #Event horizon #Extremal black hole #Fuzzball #General relativity #Horizon #Nonsingular black hole models #Physics #Rotating black hole #Theoretical physics #White hole #gr-qc
paper · pdf · doi:10.1103/physrevd.60.104031
published as Phys.Rev. D60 (1999) 104031 · 10 pages
openalex publication_date 1999/10/26 · arxiv created 1999/11/02 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The destruction of the black-hole event horizon is ruled out by both cosmic censorship and the generalized second law of thermodynamics. We test the consistency of this prediction in a (more) ``dangerous'' version of the gedanken experiment suggested by Bekenstein and Rosenzweig. A U(1)-charged particle is lowered slowly into a near extremal black hole which is not endowed with a U(1) gauge field. The energy delivered to the black hole can be redshifted by letting the assimilation point approach the black-hole horizon. At first sight, therefore, the particle is not hindered from entering the black hole and removing its horizon. However, we show that this dangerous situation is excluded by a combination of two factors not considered in former gedanken experiments: the effect of the spacetime curvature on the electrostatic self-interaction of the charged system (the black-hole polarization), and the finite size of the charged body.