de Sitter Spacetimes from Warped Compactifications of IIB String Theory
arXiv:hep-th/0112079 · doi:10.1016/S0370-2693(02)01713-6
Abstract
We continue our study of codimension two solutions of warped space-time varying compactifications of string theory. In this letter we discuss a non-supersymmetric solution of the classical type IIB string theory with de Sitter gravity on a codimension two uncompactified part of spacetime. A non-zero positive value of the cosmological constant is induced by the presence of non-trivial stringy moduli, such as the axion-dilaton system for the type IIB string theory. Furthermore, the naked singularity of the codimension two solution is resolved by the presence of a small but non-zero cosmological constant.
10 pages, LaTeX, references added and minor changes made
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