Elements of String Cosmology

Details Elements of String Cosmology Elements of String Cosmology

1991-09-25

arxiv.org/abs/hep-th/9109048v1

Nucl.Phys.B372:443-466,1992

Physics

High Energy Physics

High Energy Physics - Theory

34 pages

Scientific paper

10.1016/0550-3213(92)90327-8

Aspects of string cosmology for critical and non-critical strings are discussed emphasizing the necessity to account for the dilaton dynamics for a proper incorporation of ``large - small" duality. This drastically modifies the intuition one has with Einstein's gravity. For example winding modes, even though contribute to energy density, oppose expansion and if not annihilated will stop the expansion. Moreover we find that the radiation dominated era of the standard cosmology emerges quite naturally in string cosmology. Our analysis of non-critical string cosmology provides a reinterpretation of the (universal cover of the) recently studied two dimensional black hole solution as a conformal realization of cosmological solutions found previously by Mueller.

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