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Problems with Time-Varying Extra Dimensions or "Cardassian Expansion" as Alternatives to Dark Energy
It has recently been proposed that the Universe might be accelerating as a consequence of extradimensions with time varying size. We show that although these scenarios can lead to acceleration, they run into serious difficulty when taking into account limits on the time variation of the four dimensi...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2002
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.68.025015 http://cds.cern.ch/record/592070 |