1996/07/15 by C. Chiou-Lahanas, G.A. Diamandis, G. A. Diamandis +4
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Quantum Electrodynamics and Casimir Effect #hep-th
paper · pdf · doi:10.1103/physrevd.54.6226
published as Phys.Rev.D54:6226-6232,1996 · 16 pages,LATEX, four figures available upon request
arxiv created 1996/07/15 · openalex publication_date 1996/11/15 · arxiv updated 2011/09/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this work we find static black hole solutions in the context of two-dimensional dilaton gravity, which is modified by the addition of an R2 term. This term arises from the one-loop effective action of a massive scalar field in its large mass approximation. The basic feature of this term is that it does not contribute to the Hawking radiation of the classical black hole backgrounds of the model. From this point of view, a class of the solutions derived are interpreted as describing back reaction effects. In particular it is argued that the evolution of a black hole via nonthermal signals is possible. Nevertheless, this evolution seems to be "soft," in the sense that it does not lead to the evaporation of a black hole, leaving the Hawking radiation as the dominant mechanism for this process.