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Is Cosmology Compatible with Blue Gravity Waves ?
A primordial gravitational wave background with positive(blue) spectral index is expected in several non-standard inflationary cosmologies where the stress-energy tensor violates the null energy condition. Here we show that a sizable amount of blue gravitational waves is compatible with current cosm...
| Autores principales: | , , , |
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| Lenguaje: | eng |
| Publicado: |
2008
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.77.101301 http://cds.cern.ch/record/1088255 |