Brick Walls on the Brane

Abstract

The so-called ``brick-wall model'' is a semi-classical approach that has been used to explain black hole entropy in terms of thermal matter fields. Here, we apply the brick-wall formalism to thermal bulk fields in a Randall-Sundrum brane world scenario. In this case, the black hole entity is really a string-like object in the anti-de Sitter bulk, while appearing as a Schwarzchild black hole to observers living on the brane. In spite of these exotic circumstances, we establish that the Bekenstein-Hawking entropy law is preserved. Although a similar calculation was recently considered in the literature, this prior work invoked a simplifying assumption (which we avoid) that can not be adequately justified.

18 pages, Latex; references and discussion added but conclusions unchanged; references missing in V4 have been restored

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• Brane World Black Rings
• Rotating Black Holes in Higher Dimensional Brane Worlds
• Entropy of BTZ black strings in the brick wall approach