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Old ideas and new twists in string cosmology

Massimo Giovannini
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Abstract

Some of the phenomenological implications of string cosmological models are reviewed, with particular attention to the spectra of the tensor, scalar and vector modes of the geometry. A class of self-dual string cosmological models is presented. These solutions provide an effective description of cold bounces, where a phase of accelerated contraction smoothly evolves into an epoch of decelerated Friedmann--Robertson--Walker expansion dominated by the dilaton. Some of the general problems of the scenario (continuity of the perturbations, reheating, dilaton stabilization,...) can be successfully discussed in this framework.

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Massimo Giovannini. 2004-09-24. Old ideas and new twists in string cosmology. https://arxiv.org/abs/hep-th/0409251

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