Propagation of scalars in nonextremal black hole and black-brane geometries
- 1 July 1998
- journal article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 58 (4)
- https://doi.org/10.1103/physrevd.58.044004
Abstract
We discuss propagation of scalars in a large class of non-extremal black hole and black p-brane geometries in generic dimensions. We show that the radial wave equation near the horizon possesses the SL(2,R) structure in every case; approximately it takes the form of the wave equation in the SL(2,R) (AdS_3) background and has a symmetry related to the T-duality of the string model in that geometry. We see a close connection to two and three dimensional black holes. We also find that, in some parameter region, the absorption cross-sections by the black objects take the form expected from a conformal field theory. Our results indicate that some of the properties known about a certain class of four and five dimensional black holes hold more generallyKeywords
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