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Introducing the Dirac-Milne universe
Benoit-Lévy A., Chardin G.
Astronomy & Astrophysics 537 (2012) 78 - http://hal.in2p3.fr/in2p3-00685903
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique
Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique
Introducing the Dirac-Milne universe
A. Benoit-Lévy1, G. Chardin2
1 :  IAP - Institut d'Astrophysique de Paris
http://www.iap.fr/
CNRS : UMR7095 – INSU – Université Pierre et Marie Curie (UPMC) - Paris VI
98bis, bd Arago - 75014 Paris France
France
2 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
http://www-csnsm.in2p3.fr/
CNRS : UMR8609 – IN2P3 – Université Paris XI - Paris Sud
batiments 104 et 108 - 91405 Orsay Campus
France
CSNSM PS1
The ΛCDM standard model, although an excellent parametrization of the present cosmological data, contains two as yet unobserved components, dark matter and dark energy, that constitute more than 95% of the Universe. Faced with this unsatisfactory situation, we study an unconventional cosmology, the Dirac-Milne universe, a matter-antimatter symmetric cosmology, in which antimatter is supposed to present a negative active gravitational mass. The main feature of this cosmology is the linear evolution of the scale factor with time, which directly solves the age and horizon problems of a matter-dominated universe. We study the concordance of this model to the cosmological test of type Ia supernovae distance measurements and calculate the theoretical primordial abundances of light elements for this cosmology. We also show that the acoustic scale of the cosmic microwave background naturally emerges at the degree scale despite an open geometry.

Articles dans des revues avec comité de lecture
01/2012
Astronomy & Astrophysics
537
78

CSNSM PS1
cosmology: theory – dark energy – primordial nucleosynthesis – dark matter
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/1110.3054