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Scalar modes of the relic gravitons
In conformally flat background geometries the long wavelength gravitons can be described in the fluid approximation and they induce scalar fluctuations both during inflation and in the subsequent radiation-dominated epoch. While this effect is minute and suppressed for a de Sitter stage of expansion...
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| Lenguaje: | eng |
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2014
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| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.91.023521 http://cds.cern.ch/record/1956515 |