Tree-level scattering amplitudes in de Sitter space diverge
Abstract
We derive the growing large-distance behaviour of the graviton propagator in de Sitter space to any order in perturbation. By explicit computation we show that tree-level scattering amplitudes diverge as a consequence of the logarithmic increase of the transverse and traceless part of the graviton propagator.
- Publication:
-
Physics Letters B
- Pub Date:
- October 1987
- DOI:
- 10.1016/0370-2693(87)90403-5
- Bibcode:
- 1987PhLB..197..373F