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Spurious gauge-invariance of higher-order contributions to the spectral energy density of the relic gravitons
In the same way as the energy density associated with the tensor modes of the geometry modifies the evolution of the curvature perturbations, the scalar modes may also indirectly affect the cosmic backgrounds of relic gravitons by inducing higher-order corrections that are only superficially gauge-i...
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| Lenguaje: | eng |
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2020
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| Acceso en línea: | https://dx.doi.org/10.1142/S0217751X20501651 http://cds.cern.ch/record/2723975 |