Maths HEP Lunchtime Seminars: The cosmological implications of brane world moduli
5 March 2004 13:00 in CM221
"A discussion about the cosmological evolution of a two-brane system with bulk scalar field will be given. Attractor solutions drive the moduli fields towards regions which are compatible with observations. The effect of the moduli dynamics on the primordial powerspectrum as well as on the CMB anisotropies are described. As will be shown, the attractor corresponds for the negative tension brane to collapse. Thus, in some sense the higher dimensional spacetime is unstable. I will discuss a way out to avoid singularities in the higher--dimensional spacetime and discuss whether the moduli fields can be candidates for dark energy."