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- (en) A Nordtvedt effect at cosmological scales affects the acoustic oscillations imprinted in the cosmic microwave background. The gravitational baryonic mass density of the universe is inferred at the first peak scale from WMAP data. The independent determination of the inertial baryonic mass density through the measurement of the deuterium abundance in the framework of standard big bang nucleosynthesis leads to a new constraint on a possible violation of the strong equivalence principle at the recombination time. Comment: 4 pages, REVTeX4. Changes include (a) corrections of typos and (b) addition of references
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Citations
Primordial constraint on the spatial dependence of the Newton constant. (n.d.). https://hdl.handle.net/2078.5/256688