An obstacle to populating the string theory landscape
arXiv:0809.2604 · doi:10.1103/PhysRevD.78.123513
Abstract
We construct domain walls and instantons in a class of models with coupled scalar fields, determining, in agreement with previous studies, that many such solutions contain naked timelike singularities. Vacuum bubble solutions of this type do not contain a region of true vacuum, obstructing the ability of eternal inflation to populate other vacua. We determine a criterion that potentials must satisfy to avoid the existence of such singularities, and show that many domain wall solutions in Type IIB string theory are singular. This has profound implications for applying the program of eternal inflation to making predictions in the string theory landscape.
5 PRD style pages with 2 embedded figures. Replaced to match published version
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Cited by in corpus (14)
- Dynamical compactification from de Sitter space
- de Sitter Cosmology on an expanding bubble
- Small Steps and Giant Leaps in the Landscape
- Bubbles of Nothing and the Fastest Decay in the Landscape
- Populating the Whole Landscape
- Multi-field open inflation model and multi-field dynamics in tunneling
- Runaway dilatonic domain walls
- Stretched extra dimensions and bubbles of nothing in a toy model landscape
- Quantum Transitions Between Minkowski and de Sitter Spacetimes
- Zoology of instanton solutions in flat potential barriers
- The Case of the Disappearing Instanton
- Inflation Expels Runaways
- Reheating-volume measure in the landscape
- Validity of the kink approximation to the tunneling action