2001/02/14 by Amos Ori · 9 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Black hole (networking) #Charge (physics) #Charged black hole #Charged particle #Constant (computer programming) #Cosmology and Gravitation Theories #Coupling (piping) #Coupling constant #Evaporation #Extremal black hole #Ion #Mass ratio #Physics #Quantum #Quantum Electrodynamics and Casimir Effect #Quantum electrodynamics #Quantum mechanics #Semiclassical physics #Thermodynamics #Zero (linguistics) #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevd.63.104016
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 63(10) (American Physical Society) · Latex, 30 pages, accepted for publication in Phys. Rev. D
arxiv created 2001/02/14 · openalex publication_date 2001/04/19 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We construct a dilatonic two-dimensional model of a charged black hole. The classical solution is a static charged black hole, characterized by two parameters m and q representing the black hole's mass and charge. Then we study the semiclassical effects, and calculate the evaporation rate of both m and q, as a function of these two quantities. Analyzing this dynamical system, we find two qualitatively different regimes, depending on the electromagnetic coupling constant gA. If the latter is greater than a certain critical value, the charge-to-mass ratio decays to zero upon evaporation. On the other hand, for gA smaller than the critical value, the charge-to-mass ratio approaches a non-zero constant that depends on gA but not on the initial values of m and q.