Spacetime foam
Abstract
The Einstein Lagrangian allows large fluctuations of the metric and topology of spacetime on scales of order of the Planck length. This foam-like structure can be described by introducing a Λ term as a Lagrange multiplier for the 4-volume. The dominant contribution to the path integral seems to come from metrics which have about one unit of topology per Planck volume.
- Publication:
-
Nuclear Physics B
- Pub Date:
- November 1978
- DOI:
- 10.1016/0550-3213(78)90375-9
- Bibcode:
- 1978NuPhB.144..349H