Birth of the Universe in string cosmology
arXiv:gr-qc/9706037
Abstract
The decay of the string perturbative vacuum into our present cosmological state is associated to the transition from a phase of growing curvature and growing dilaton, to a phase of decreasing curvature and frozen dilaton. The possible approaches to a classical and quantum description of such a transition are introduced and briefly discussed.
arXiv comment17 pages, LATEX, seven figures included using EPSF, based on a talk given at the "Fourth Paris Cosmology Colloquium" (Observatoire de Paris, June 1997). To appear in the Proceedings (ed. by H. J. De Vega and N. Sanchez). An updated collection of papers on the pre-big bang scenario is available at http://www.to.infn.it/teorici/gasperini
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