CosPA 3

Theoretical Studies of Cosmology and Particle Astrophysics

We propose to investigate the detailed evolution of the universe at different stages and to conduct a comprehensive study of manifestations of the various non-equilibrium and non-linear phenomena in the early Universe, aiming at constructing a precision cosmological model of the early Universe. Aspects related to the AMIBA Project (Subproposal No. 1) and to the Supernova Cosmology Project will be stressed. The research topics include non-equilibrium aspects of cosmological phase transitions, roles of topological objects, primary and secondary anisotropies and polarizations of the cosmic microwave background, gravitational dynamics of large-scale structures, particle physics study of dark matter, superstring-inspired gravity models, and cosmology based on noncommutative spacetime. The theoretical component will provide direct support to interpret and model AMIBA data, as well as to unravel the indirect background (such as distant galaxy clusters) through the understanding of initial conditions on the hot big bang model and the origin of baryonic and dark matter.