2006/11/30 by Elias Kiritsis, Francesco Nitti, F. Nitti · 57 citations
Mathematics · Physics and Astronomy · #Anti-de Sitter space #Black Holes and Theoretical Physics #Boundary value problem #Classical mechanics #Cosmology and Gravitation Theories #Dilaton #Geometry #Gravitation #Graviton #Massless particle #Mathematical physics #Mathematics #Noncommutative and Quantum Gravity Theories #Physics #Quantum mechanics #Scalar (mathematics) #Spacetime #Spin (aerodynamics) #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2007.02.024
published in Nuclear Physics B 772(1-2), 67-102 (Elsevier BV) · 40 pages, 1 figure. Revised version, to appear in Nuclear Physics B. Typos corrected, one reference added
openalex publication_date 2007/03/13 · arxiv created 2007/04/13 · arxiv updated 2010/04/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate the conditions for obtaining four-dimensional massless spin-2 states in the spectrum of fluctuations around an asymptotically AdS5 solution of Einstein-Dilaton gravity. We find it is only possible to have normalizable massless spin-2 modes if the space-time terminates at some IR point in the extra dimension, far from the UV AdS boundary, and if suitable boundary conditions are imposed at the ``end of space.'' In some of these cases the 4D spectrum consists only of a massless spin-2 graviton, with no additional massless or light scalar or vector modes. These spin-2 modes have a profile wave-function peaked in the interior of the 5D bulk space-time. Under the holographic duality, they may be sometimes interpreted as arising purely from the IR dynamics of a strongly coupled QFT living on the AdS boundary.