String Cosmology: an Update
نویسنده
چکیده
A string cosmology scenario (“pre-big-bang”) postulates that the evolution of the Universe starts from a state of very small curvature and coupling, undergoes a long phase of dilaton-driven kinetic inflation and at some later time joins smoothly standard radiation dominated cosmological evolution, thus giving rise to a singularity free inflationary cosmology. I report on recent progress in understanding some outstanding issues such as initial conditions, graceful exit transition and generation of inhomogeneity perturbations. Contribution to the proceedings of COSMO-97, International Workshop on Particle Physics and The Early Universe, 15-19 September 1997, Ambleside, Lake District, England.
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