In models with extra dimensions, a black hole evaporates both in the bulk and on the visible brane, where standard model fields live. The exact emissivities of each particle species are needed to determine how the black hole decay proceeds. We compute and discuss the absorption cross sections, the relative emissivities, and the total power output of all known fields in the evaporation phase. Graviton emissivity is highly enhanced as the spacetime dimensionality increases. Therefore, a black hole loses a significant fraction of its mass in the bulk. This result has important consequences for the phenomenology of black holes in models with extra dimensions and black hole detection in particle colliders.
V. Cardoso et al., "Black Hole Particle Emission in Higher-Dimensional Spacetimes," Physical Review Letters, vol. 96, no. 7, American Physical Society (APS), Feb 2006.
The definitive version is available at https://doi.org/10.1103/PhysRevLett.96.071301
FCT (Fundação para a Ciência e Tecnologia)
Fundação Calouste Gulbenkian
Keywords and Phrases
Absorption cross sections; Graviton emissivity; Particle emissions; Relative emissivities; Absorption; Colliding beam accelerators; Computation theory; Evaporation; Mathematical models; Elementary particles
International Standard Serial Number (ISSN)
Article - Journal
© 2006 American Physical Society (APS), All rights reserved.
01 Feb 2006
V. C. acknowledges financial support from FCT through the PRAXIS XXI program and from Fundação Calouste Gulbenkian