**Wednesday, 8 October 2008** 09:59:03 PM (GMT)
Extra-Dimensions and Space-Time Structure
Brane world cosmology with extra dimensions is motivated by a unified M-theory or
superstring theory which manifests Einstein Universe as a hyper-surface (i.e. brane)
in higher dimensional manifold. We explore the quantum properties of cold dark matter
particles such as the lightest super-symmetric particles in brane world cosmology,
and look for their observational signature in cosmic gravitational wave background,
cosmic microwave background radiation, Type Ia supernova magnitude-redshift relation,
baryon-to-mass ratio of rich clusters, cluster mass-to-light ratio, etc. We also try
to parameterize the dark energy as an inflow energy density of scalar field in the
bulk. We aim to understand the space-time structure of the brane world cosmology both
theoretically and observationally. (Kajino) Last edited: **11 October 2008** |