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The effective energy density of relic gravitons
The energy density, the pressure and the anisotropic stress of the relic gravitons do not have a unique gauge-invariant and frame-invariant expression since the equivalence principle ultimately forbids the localization of the energy-momentum of the gravitational field. All the strategies proposed so...
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| Lenguaje: | eng |
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2019
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| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.100.083531 http://cds.cern.ch/record/2687709 |