Phys. Rev. D 78, 123513 (2008) [5 pages]Obstacle to populating the string theory landscapeReceived 26 September 2008; published 5 December 2008 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. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.78.123513
DOI:
10.1103/PhysRevD.78.123513
PACS:
98.80.Cq
See AlsoSee Also: Anthony Aguirre, Matthew C. Johnson, and Magdalena Larfors, Runaway dilatonic domain walls, Phys. Rev. D 81, 043527 (2010). |
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