Supernovae, CMB, and gravitational leakage into extra dimensions

C. Deffayet , S.J. Landau , J. Raux (1) , M. Zaldarriaga , P. Astier (1)

1 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies

We discuss observational constraints coming from CMB and type Ia supernovae for the model of an accelerated universe produced by gravitational leakage into extra dimensions. Our fits indicate that the model is currently in agreement with the data. We also give the equations governing the evolution of cosmological perturbations. Future observations will be able to severely constrain the model.

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]; Relativité Générale et Cosmologie Quantique [gr-qc]; Physique des Hautes Energies - Phénoménologie [hep-ph]; Physique des Hautes Energies - Théorie [hep-th]; Astrophysique [astro-ph]

C. Deffayet, S.J. Landau, J. Raux, M. Zaldarriaga, P. Astier. Supernovae, CMB, and gravitational leakage into extra dimensions. Physical Review D, 2002, 66, pp.024019. ⟨10.1103/PhysRevD.66.024019⟩. ⟨in2p3-00138217⟩