Translation invariant backgrounds in (1+1)-dimensional string theory

May 20, 1991
27 pages
Published in:
  • Nucl.Phys.B 369 (1992) 324-350
  • Published: 1992
Report number:
  • UTTG-16-91

Citations per year

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Abstract: (Elsevier)
We consider those tachyon backgrounds in 1 + 1 dimensional string theory which are invariant under one linear combination of time and space translations. These correspond to world-sheet theories which are a product of a free theory and a Liouville theory, where the Liouville central charge can take any value. The nonlinear tachyon field theory derived from the random matrix model gives exact information about the Liouville theory. We use this to study the Liouville theory in the “strong gravity” region, the critical string tachyon instability, and quantum cosmology.
  • string model: boson
  • dimension: 2
  • field theory: tachyon
  • background field
  • field theory: Liouville
  • field equations: solution
  • matrix model: random
  • quantum gravity
  • central charge
  • bibliography