Supernovae, CMB, and gravitational leakage into extra dimensions

Abstract

We discuss observational constraints coming from CMB and type la 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. © 2002 The American Physical Society.