Dispersion relations in string theory

Dec, 1993
15 pages
Published in:
  • Theor.Math.Phys. 98 (1994) 306-316,
  • Teor.Mat.Fiz. 98 (1994) 442-455
e-Print:
Report number:
  • YITP-K-1043,
  • UCLA-93-TEP-45

Citations per year

199520022009201620231320
Abstract: (desy)
We analyze the analytic continuation of the formally divergent one-loop amplitude for scattering of the graviton multiplet in the Type II Superstring. In particular we obtain explicit double and single dispersion relations, formulas for all the successive branch cuts extending out to ++\infty, as well as for the decay rate of a massive string state of arbitrary mass 2N2N into two string states of lower mass. We compare our results with the box diagram in a superposition of ϕ 3\phi~3-like field theories. The stringy effects are traced to a convergence problem in this superposition.
  • talk: Alushta 1993/06/13
  • string model
  • dispersion relation
  • scattering amplitude: graviton
  • graviton: scattering amplitude
  • decay: string
  • string: decay
  • phi**n model: 3
  • supersymmetry