TL;DR
This paper reviews the pre-big bang scenario in string cosmology, discussing its motivations, theoretical foundations, phenomenological implications, and unresolved issues.
Contribution
It provides a comprehensive overview of the pre-big bang model, highlighting recent developments and identifying key open problems in the field.
Findings
Summarizes the physical motivations for the pre-big bang scenario.
Discusses the theoretical framework and phenomenological aspects.
Identifies outstanding problems and future research directions.
Abstract
A review is attempted of physical motivations, theoretical and phenomenological aspects, as well as outstanding problems, of the pre-big bang scenario in string cosmology.
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