Topological Defects in the Moduli Sector of String Theory

Details Topological Defects in the Moduli Sector of String Theory Topological Defects in the Moduli Sector of String Theory

1991-09-24

arxiv.org/abs/hep-th/9109044v2

Physics

High Energy Physics

High Energy Physics - Theory

7 pages (Talk presented at Strings '91 Workshop, May 20-25, 1991, Stony Brook, NY.)

Scientific paper

We point out that the moduli sector of the $(2,2)$ string compactification with its nonperturbatively preserved non-compact symmetries is a fertile framework to study global topological defects, thus providing a natural source for the large scale structure formation. Based on the target space modular invariance of the nonperturbative superpotential of the four-dimensional N=1 supersymmetric string vacua, topologically stable stringy domain walls are found. They are supersymmetric solutions, thus saturating the Bogomolnyi bound. It is also shown that there are moduli sectors that allow for the global monopole-type and texture-type configurations whose radial stability is ensured by higher derivative terms.

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