The Large N limit of superconformal field theories and supergravity

Nov, 1997
21 pages
Published in:
  • Int.J.Theor.Phys. 38 (1999) 1113-1133 (reprint),
  • Adv.Theor.Math.Phys. 2 (1998) 231-252
e-Print:
Report number:
  • HUTP-97-A097,
  • HUTP-98-A097

Citations per year

1997200420112018202502004006008001K
Abstract: (arXiv)
We show that the large NN limit of certain conformal field theories in various dimensions include in their Hilbert space a sector describing supergravity on the product of Anti-deSitter spacetimes, spheres and other compact manifolds. This is shown by taking some branes in the full M/string theory and then taking a low energy limit where the field theory on the brane decouples from the bulk. We observe that, in this limit, we can still trust the near horizon geometry for large NN. The enhanced supersymmetries of the near horizon geometry correspond to the extra supersymmetry generators present in the superconformal group (as opposed to just the super-Poincare group). The 't Hooft limit of 4-d N=4{\cal N} =4 super-Yang-Mills at the conformal point is shown to contain strings: they are IIB strings. We conjecture that compactifications of M/string theory on various Anti-deSitter spacetimes are dual to various conformal field theories. This leads to a new proposal for a definition of M-theory which could be extended to include five non-compact dimensions.
Note:
  • Reprinted in *Duff, M.J. (ed.): The world in eleven dimensions* 492-513
  • field theory: conformal
  • expansion 1/N
  • supergravity
  • Hilbert space
  • space-time: anti-de Sitter
  • membrane model
  • string model
  • geometry: horizon
  • gauge field theory: U(N)
  • supersymmetry