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Fate of Kaluza-Klein black holes: Evaporation or excision?

2007/03/31 by Keiju Murata, Jiro Soda, Sugumi Kanno · 4 citations
Physics and Astronomy · #Accretion (finance) #Astrophysics #Black Holes and Theoretical Physics #Black brane #Black hole (networking) #Black string #Classical mechanics #Cosmology and Gravitation Theories #Evaporation #Extremal black hole #Gravitational wave #Hawking radiation #Instability #Kaluza–Klein theory #Mechanics #Micro black hole #Physics #Quantum Electrodynamics and Casimir Effect #Quantum mechanics #Spacetime #Theoretical physics #Thermodynamics #gr-qc #hep-th

paper · pdf · doi:10.1103/physrevd.75.104017

published as Phys.Rev.D75:104017,2007 · 6 pages, 4 figures

openalex publication_date 2007/05/31 · arxiv created 2007/06/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We study the evaporation process of black strings which are typical examples of Kaluza-Klein black holes. Taking into account the backreaction of the Hawking radiation, we deduce the evolution equation for the radion field. By solving the evolution equation, we find that the shape of the internal space is necked by the Hawking radiation and the amount of the deformation becomes large as the evaporation proceeds. Based on this analysis, we speculate that the Kaluza-Klein black holes would be excised from the Kaluza-Klein spacetime before the onset of the Gregory-Laflamme instability and therefore before the evaporation.

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