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We discuss the propagation of scalars in a large class of non-extremal blackhole and black p-brane geometries in generic dimensions. We show that theradial wave equation near the horizon possesses the SL(2,R) structure in everycase; 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 stringmodel in that geometry. We see a close connection to two and three dimensionalblack holes. We also find that, in some parameter region, the absorptioncross-sections by the black objects take the form expected from a conformalfield theory. Our results indicate that some of the properties known about acertain class of four and five dimensional black holes hold more generally.Comment: 26 pages, LaTex; version to appear in Phys. Rev.

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Propagation of scalars in nonextremal black hole and black<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi></mml:math>-brane geometries

Propagation of scalars in nonextremal black hole and blackp-brane geometries