Johnson, Matthew C. and Larfors, Magdalena (2008) Obstacle to populating the string theory landscape. Physical Review D, 78 (12). Art. No. 123513. ISSN 0556-2821 http://resolver.caltech.edu/CaltechAUTHORS:JOHprd08b
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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.
|Additional Information:||© 2008 The American Physical Society. Received 26 September 2008; published 5 December 2008. We thank T. Banks, S. Carroll, U. Danielsson, F. Denef, M. Dine, J. Preskill, A. Vilenkin, and K. Vyas for discussions and comments. M.J. is supported by the Gordon and Betty Moore Foundation. M. L. was supported in part by the STINT CTP-Uppsala exchange and thanks the CTP at MIT for hospitality.|
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|Deposited On:||11 Dec 2008 06:49|
|Last Modified:||26 Dec 2012 10:33|
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