Journal
PHYSICAL REVIEW LETTERS
Volume 84, Issue 12, Pages 2564-2567Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.2564
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We consider an exotic compactification of spacetime in which there ore 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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