Dark matter relic abundance and scalar - tensor dark energy - INSPIRE

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Dark matter relic abundance and scalar - tensor dark energy

Riccardo Catena
(
- Pisa, Scuola Normale Superiore and
- INFN, Pisa
)
,
N. Fornengo
(
- Turin U. and
- INFN, Turin
)
,
A. Masiero
(
- Padua U. and
- INFN, Padua
)
,
Massimo Pietroni
(
- INFN, Padua
)
,
Francesca Rosati
(
- Padua U. and
- INFN, Padua
)

Mar, 2004

12 pages

Published in:

Phys.Rev.D 70 (2004) 063519

e-Print:

astro-ph/0403614 [astro-ph]

DOI:

10.1103/PhysRevD.70.063519

Report number:

DFTT-10-2004,
DFPD-04-TH-08

View in:

ADS Abstract Service

reference search153 citations

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Abstract: (arXiv)

Scalar-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.

98.80.Cq
95.35.+d
dark matter: density
gravitation: scalar
gravitation: tensor
quintessence
cosmic background radiation
WIMP: decoupling
dark energy
light nucleus: production

References(53)

Figures(0)

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