Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2000-01-31
Phys.Rev.D63:064034,2001
Physics
High Energy Physics
High Energy Physics - Theory
10 pages, title changed, a crucial comment on the brane world black hole added, and to appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.63.064034
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$_5$-horizon is known to be stable, but any explicit calculation for stability of the RS black hole at $z=0$ is not yet performed. Here its stability is investigated against the $z$-independent perturbations composed of odd, even parities of graviton ($h_{\mu\nu}$) and BD scalar($h_{44} = 2\phi $). It seems that the RS black hole is classically unstable because it has a potential instability at wavelength with $\lambda > 1/(2k)$. However, this is not allowed inside an AdS$_5$-box of the size with $1/(2k)$. Thus the RS black hole becomes stable. The RS black hole can be considered as a stable remnant at $z=0 $ of the black cigar.
Lee Hyun Woo
Myung Yun Soo
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