Localized gravity and large hierarchy from string theory?

Within a D-dimensional superstring spacetime, we construct a non-supersymmetric brane-world with localized gravity and large hierarchy between the scale in the bulk, MD, and the scale on the brane, MD−2. The localization of gravity and the large hierarchy are both guaranteed by the presence of nontrivial stringy moduli, such as the axion–dilaton system for the type IIB string theory.