Mirror Images of String Cosmologies

Abstract

A discrete symmetry of the four-dimensional string effective action is employed to derive spatially homogeneous and inhomogeneous string cosmologies from vacuum solutions of general relativity that admit two commuting spacelike Killing vectors. In particular, a tilted Bianchi type V cosmology is generated from a vacuum type VI_h solution and a plane wave solution with a bounded and oscillating dilaton field is found from a type ${\mathrm{VII}}_h$ model. Further applications are briefly discussed.

10 pages plain latex

Cited by in corpus (4)

• The Pre-Big Bang Scenario in String Cosmology
• Superstring Cosmology
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• Asymptotic Behaviour of Inhomogeneous String Cosmologies