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Gauss-Bonnet cosmologies: crossing the phantom divide and the transition from matter dominance to dark energy
Dark energy cosmologies with an equation-of-state parameter $w$ less than -1 are often found to violate the null energy condition and show unstable behaviour. A solution to this problem requires the existence of a consistent effective theory that violates the null energy condition only momentarily a...
Autores principales: | , |
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Lenguaje: | eng |
Publicado: |
2007
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1088/1475-7516/2007/05/019 http://cds.cern.ch/record/1014562 |