A Brane World Solution to the Cosmological Constant Problem
S. -H. Henry Tye, Ira Wasserman
Abstract
We consider a model with two parallel (positive tension) 3-branes separated by a distance L in 5-dimensional spacetime. If the interbrane space is anti-deSitter, or is not precisely anti-deSitter but contains no event horizons, the effective 4-dimensional cosmological constant seen by observers on one of the branes (chosen to be the visible brane) becomes exponentially small as L grows large.
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