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Abstract:
We explain how the string spectrum in flat space and pp-waves arises from the large NN limit, at fixed gYM2g^2_{YM}, of U(N) N=4{\cal N} =4 super Yang Mills. We reproduce the spectrum by summing a subset of the planar Feynman diagrams. We give a heuristic argument for why we can neglect other diagrams. We also discuss some other aspects of pp-waves and we present a matrix model associated to the DLCQ description of the maximally supersymmetric eleven dimensional pp-waves.
  • gauge field theory: U(N)
  • supersymmetry
  • expansion 1/N
  • string model: spectrum
  • matrix model
  • quantization: light cone
  • discrete
  • M-theory
  • dimension: 10
  • space-time