Decoupling and non-decoupling dynamics of large D black holes

Jun 4, 2014
30 pages
Published in:
  • JHEP 07 (2014) 113
  • Published: 2014
e-Print:
Report number:
  • YITP-14-45,
  • KEK-TH-1741,
  • YITP-14-45,
  • KEK-TH-1741

Citations per year

2015201720192021202305101520
Abstract: (Springer)
The limit of large number of dimensions localizes the gravitational field of a black hole in a well-defined region near the horizon. The perturbative dynamics of the black hole can then be characterized in terms of states in the near-horizon geometry. We investigate this by computing the spectrum of quasinormal modes of the Schwarzschild black hole in the 1/D expansion, which we find splits into two classes. Most modes are non-decoupled modes: non-normalizable states of the near-horizon geometry that straddle between the near-horizon zone and the asymptotic zone. They have frequency of order D/r0_{0} (with r0_{0} the horizon radius), and are also present in a large class of other black holes. There also exist a much smaller number of decoupled modes: normalizable states of the near-horizon geometry that are strongly suppressed in the asymptotic region. They have frequency of order 1/r0_{0}, and are specific of each black hole. Our results for their frequencies are in excellent agreement with numerical calculations, in some cases even in D = 4.
Note:
  • 30 pages, 13 figures; v2: minor corrections
  • Black Holes
  • Black Holes in String Theory
  • black hole: Schwarzschild
  • quasinormal mode: spectrum
  • geometry
  • decoupling
  • horizon
  • numerical calculations
  • gravitation
  • suppression