Cosmic microwave background constraints on the strong equivalence principle

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dc.creatorBoucher, V.
dc.creatorGerard, J. -M.
dc.creatorVandergheynst, P.
dc.creatorWiaux, Y.
dc.date2004-07-10
dc.date2004-10-26
dc.date.accessioned2026-07-07T02:13:49Z
dc.date.available2026-07-07T02:13:49Z
dc.descriptionWe study the effect of a violation of the strong equivalence principle (SEP) on the cosmic microwave background (CMB). Such a violation would modify the weight of baryons in the primordial gravitational potentials and hence their impact in the establishment of the photon-baryon plasma acoustic oscillations before recombination. This cosmological Nordtvedt effect alters the odd peaks height of the CMB temperature anisotropy power spectrum. A gravitational baryonic mass density of the universe may already be inferred at the first peak scale from the analysis of WMAP data. Experimental constraints on a primordial SEP violation are derived from a comparison with the universe's inertial baryonic mass density measured either in a full analysis of the CMB, or in the framework of the standard big bang nucleosynthesis (BBN).
dc.descriptionVersion accepted for publication in Phys. Rev. D, 8 pages, Revtex 4; discussion of "Experimental constraints" extended, references added, typos corrected
dc.identifierhttps://arxiv.org/abs/astro-ph/0407208
dc.identifierhttp://arxiv.org/abs/astro-ph/0407208
dc.identifierPhys.Rev. D70 (2004) 103528
dc.identifierdoi:10.1103/PhysRevD.70.103528
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/7940
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleCosmic microwave background constraints on the strong equivalence principle
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