paper

Brane solutions in strings with broken supersymmetry and dilaton tadpoles

arXiv:hep-th/0004165 · doi:10.1016/S0370-2693(00)00734-6

Abstract

The tachyon-free nonsupersymmetric string theories in ten dimensions have dilaton tadpoles which forbid a Minkowski vacuum. We determine the maximally symmetric backgrounds for the Type I string and the heterotic string. The static solutions exhibit nine dimensional Poincaré symmetry and have finite 9D Planck and Yang-Mills constants. The low energy geometry is given by a ten dimensional manifold with two boundaries separated by a finite distance which suggests a spontaneous compactification of the ten dimensional string theory.

13 pages

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