Dark Matter Relic Abundance and Scalar-Tensor Dark Energy

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dc.creatorCatena, R.
dc.creatorFornengo, N.
dc.creatorMasiero, A.
dc.creatorPietroni, M.
dc.creatorRosati, F.
dc.date2004-03-26
dc.date2004-09-14
dc.date.accessioned2026-07-07T11:08:18Z
dc.date.available2026-07-07T11:08:18Z
dc.descriptionScalar-tensor theories of gravity provide a consistent framework to accommodate an ultra-light quintessence scalar field. While the equivalence principle is respected by construction, deviations from General Relativity and standard cosmology may show up at nucleosynthesis, CMB, and solar system tests of gravity. After imposing all the bounds coming from these observations, we consider the expansion rate of the universe at WIMP decoupling, showing that it can lead to an enhancement of the dark matter relic density up to few orders of magnitude with respect to the standard case. This effect can have an impact on supersymmetric candidates for dark matter.
dc.description12 pages, 13 figures; V2: references added, matches published version
dc.identifierhttps://arxiv.org/abs/astro-ph/0403614
dc.identifierhttp://arxiv.org/abs/astro-ph/0403614
dc.identifierPhys.Rev.D70:063519,2004
dc.identifierdoi:10.1103/PhysRevD.70.063519
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190092
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleDark Matter Relic Abundance and Scalar-Tensor Dark Energy
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