Abstract:
In these lectures I discuss various unsolved problems of string theory and their relations to quantum gravity, 3d Ising model, large N QCD, and quantum cosmology. No solutions are presented but some new and perhaps useful approaches are suggested.
  • lectures
  • string model
  • dimension: 2
  • quantum gravity
  • sigma model: nonlinear
  • astrophysics
  • field theory: dilaton
  • inflation
  • Ising model
  • dimension: 3
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