Critical energy flux and mass in solvable theories of 2D dilaton gravity

1998/05/21 by A. Fabbri, Alessandro Fabbri, José Navarro-Salas +1
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.58.084011

published as Phys.Rev. D58 (1998) 084011 · LaTeX file, 12 pages, 4 figures

arxiv created 1998/05/21 · openalex publication_date 1998/09/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this paper we address the issue of determining the semiclassical threshold for black hole formation in the context of a one-parameter family of theories which continuously interpolates between the RST and BPP models. We find that the results depend significantly on the initial static configuration of the spacetime geometry before the influx of matter is turned on. In some cases there is a critical energy density, given by the Hawking rate of evaporation, as well as a critical mass m_cr (eventually vanishing). In others there is neither m_cr nor a critical flux.

Citations

• The Endpoint of Hawking Evaporation
• Cosmic Censorship in Two-Dimensional Gravity
• Universality and scaling in gravitational collapse of a massless scalar field
• Particle creation by black holes