paper

Schwarzschild black hole in the dilatonic domain wall

arXiv:hep-th/0001211 · doi:10.1103/PhysRevD.63.064034

Abstract

In the dilatonic domain wall model, we study the Schwarzschild black hole as a solution to the Kaluza-Klein (KK) zero mode effective action which is equivalent to the Brans-Dicke (BD) model with a potential. This can describe the large Randall-Sundrum (RS) black hole whose horizon is to be the intersection of the black cigar with the brane. The black cigar located far from the AdS-horizon is known to be stable, but any explicit calculation for stability of the RS black hole at is not yet performed. Here its stability is investigated against the -independent perturbations composed of odd, even parities of graviton () and BD scalar(). It seems that the RS black hole is classically unstable because it has a potential instability at wavelength with . However, this is not allowed inside an AdS-box of the size with . Thus the RS black hole becomes stable. The RS black hole can be considered as a stable remnant at of the black cigar.

10 pages, title changed, a crucial comment on the brane world black hole added, and to appear in Phys. Rev. D

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