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Stringy bounces and gradient instabilities
Bouncing solutions are obtained from a generally covariant action characterized by a potential which is a nonlocal functional of the dilaton field at two separated space-time points. Gradient instabilities are shown to arise in this context but they are argued to be nongeneric. After performing a ga...
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| Lenguaje: | eng |
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2016
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| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.95.083506 http://cds.cern.ch/record/2236545 |