Renormalizability of General Relativity on a Background of Space-time Foam

1986
44 pages
Published in:
  • Nucl.Phys.B 267 (1986) 714-757
  • Published: 1986

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Abstract: (Elsevier)
We show that a distribution of virtual black holes in the vacuum at shorter than Planck scales can have a profound effect on the perturbative high-energy behavior of a quantum field theory. This follows if we make the assumption that only perturbations which vanish inside the apparent horizons of virtual black holes can make a coherent contribution to scattering amplitudes. As a result there is a cutoff-dependent contribution to the density of states which comes from the scale dependence of the density of virtual black holes in the vacuum. This results in a modification in the divergence-structure of perturbation theory on a background of spacetime foam.
  • black hole
  • general relativity
  • FIELD THEORY: SPACE-TIME
  • FIELD THEORETICAL MODEL: RENORMALIZABLE
  • PERTURBATION THEORY
  • EXPANSION 1/N
  • POSTULATED PARTICLE: GRAVITON
  • EXPANSION: semiclassical
  • BIBLIOGRAPHY