INFLATIONARY COSMOLOGY OF THE EXTREME COSMIC-STRING

Starting with a study of the cosmological solution to the Einstein equ ations for the internal spacetime of an extreme supermassive cosmic st ring kink, and by evaluating the probability measure for the formation of such a kink in semiclassical approximation using a minisuperspace with the appropriate symmetry, we have found a set of arguments in fav or of the claim that the kinked extreme string can actually be regarde d as an unbounded chain of pairs of Planck-sized universes. Once one s uch universe pairs is created along a primordial phase transition at t he :Planck scale, it undergoes an endless process of continuous self-r egeneration driven by chaotic inflation in each of the universes formi ng the pair.