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arXiv · hep-th/9911015

Nonsingular global string compactifications

Ruth Gregory
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Abstract

We consider an exotic `compactification' of spacetime in which there are two infinite extra dimensions, using a global string instead of a domain wall. By having a negative cosmological constant we prove the existence of a nonsingular static solution using a dynamical systems argument. A nonsingular solution also exists in the absence of a cosmological constant with a time-dependent metric. We compare and contrast this solution with the Randall-Sundrum universe and the Cohen-Kaplan spacetime, and consider the options of using such a model as a realistic resolution of the hierarchy problem.

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Ruth Gregory. 1999-11-17. Nonsingular global string compactifications. https://doi.org/10.1103/physrevlett.84.2564

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