Gravity localization on string - like defects in codimension two and the AdS / CFT correspondence

Dec, 2000
21 pages
Published in:
  • JHEP 02 (2001) 042
e-Print:
Report number:
  • YCTP-P11-00

Citations per year

20012005200920132017024681012
Abstract:
We study the localization of gravity on string-like defects in codimension two. We point out that the gravity-localizing `local cosmic string' spacetime has an orbifold singularity at the horizon. The supergravity embedding and the AdS/CFT correspondence suggest ways to resolve the singularity. We find two resolutions of the singularity that have a semiclassical gravity description and study their effect on the low-energy physics on the defect. The first resolution leads, at long distances, to a codimension one Randall-Sundrum scenario. In the second case, the infrared physics is like that of a conventional finite-size Kaluza-Klein compactification, with no power-law corrections to the gravitational potential. Similar resolutions apply also in higher codimension gravity-localizing backgrounds.
  • field theory: conformal
  • space-time: anti-de Sitter
  • astrophysics: string
  • gravitation: local
  • orbifold: singularity
  • supergravity
  • Randall-Sundrum model
  • Kaluza-Klein model
  • mass: gap