2005/09/30 by Julien Grain, J. Grain, Aurélien Barrau +3 · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Black brane #Black hole (networking) #Black hole thermodynamics #Cosmology and Gravitation Theories #Curvature #Einstein #Entropy (arrow of time) #Extremal black hole #Gauge theory #Gauss–Bonnet theorem #Geometry #Mathematical physics #Micro black hole #Noncommutative and Quantum Gravity Theories #Physics #Planck #Quantum mechanics #Scalar (mathematics) #Theoretical physics #Virtual black hole #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.72.104016
published as Phys.Rev.D72:104016,2005 · 29 pages, Latex file, 11 figures, Data files (greybody factors) available at http://lpsc.in2p3.fr/ams/greybody/, typos corrected, references added, version to appear in Phys. Rev. D
arxiv created 2005/11/09 · openalex publication_date 2005/11/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Lovelock gravity is an important extension of general relativity that provides a promising framework to study curvature corrections to the Einstein action, while avoiding ghosts and keeping second order field equations. This paper derives the greybody factors for D-dimensional black holes arising in a theory with a Gauss-Bonnet curvature-squared term. These factors describe the nontrivial coupling between black holes and quantum fields during the evaporation process: they can be used both from a theoretical viewpoint to investigate the intricate space-time structure around such a black hole, and for phenomenological purposes in the framework of braneworld models with a low Planck scale. We derive exact spectra for the emission of scalar, fermion and gauge fields emitted on the brane, and for scalar fields emitted in the bulk, and demonstrate how the Gauss-Bonnet term can change the bulk-to-brane emission rates ratio in favor of the bulk channel in particular frequency regimes.