Godel universes in string theory
Mar, 1998Citations per year
Abstract: (arXiv)
We show that homogeneous G\"odel spacetimes need not contain closed timelike curves in low-energy-effective string theories. We find exact solutions for the G\"odel metric in string theory for the full action including both dilaton and axion fields. The results are valid for bosonic, heterotic and super-strings. To first order in the inverse string tension , these solutions display a simple relation between the angular velocity of the G\"odel universe, and the inverse string tension of the form in the absence of the axion field. The generalization of this relationship is also found when the axion field is present.Note:
- 13 pages, REVTEX, improved version, more references added
- string model
- space-time: Goedel
- dilaton
- axion
- string tension
- velocity: rotation
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