Wormholes, a fluctuating cosmological constant and the Coleman mechanism
arXiv:2101.00478 · doi:10.1016/j.physletb.2021.136152
Abstract
We show that in a two-dimensional model of quantum gravity the summation over all possible wormhole configurations leads to a kind of Coleman mechanism where the cosmological constant plays no role for large universes. Observers who are unable to observe the change in topology will naturally interpret the measurements of the size of the universe as being caused by a fluctuating cosmological constant, rather than fluctuating topology of spacetime.
11 pages, 2 figures
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Cited by in corpus (6)
- Spacetime foam: a review
- Charged traversable wormholes supported by Casimir energy with and without GUP corrections
- Wormholes in 2d Horava-Lifshitz quantum gravity
- Baby universes in 2d and 4d theories of quantum gravity
- Baby universes, ensemble averages and factorizations with matters
- CDT and Horava-Lifshitz QG in Two Dimensions