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The refractive index of the relic gravitons and the nHz band
If the refractive index of the relic gravitons increases during a conventional stage of inflationary evolution the spectral energy density is blue at intermediate frequencies above the fHz and then flattens out after a knee that is typically smaller than the mHz. We investigate here the conditions l...
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| Lenguaje: | eng |
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2021
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| Acceso en línea: | https://dx.doi.org/10.1140/epjc/s10052-022-10050-4 http://cds.cern.ch/record/2798673 |