The Cosmological Constant in Calabi-Yau 3-fold Compactifications of the Horava-Witten Theory
S. P. de Alwis, Nikolaos Irges
Abstract
Brane world scenarios offer a way of setting the cosmological constant to zero after supersymmetry breaking provided there is a sufficient number of adjustable integration constants/parameters. In the case of the Horava-Witten theory compactified on a Calabi-Yau threefold, we argue that it is difficult to find enough freedom to get a zero (or small) cosmological constant after supersymmetry breaking.
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