On Open Membranes, Cosmic Strings and Moduli Stabilization

Abstract

We discuss how cosmic strings can be created in heterotic M-theory compactifications with stable moduli. We conclude that the only appropriate candidates seem to be fundamental open membranes with a small length. In four dimensions they will appear as strings with a small tension. We make an observation that, in the presence of the vector bundle moduli, it might be possible to stabilize a five-brane very close to the visible sector so that a macroscopic open membrane connecting this five-brane and the visible brane will have a sufficiently small length. We also discuss how to embed such cosmic strings in heterotic models with stable moduli and whether they can be created after inflation.

LaTeX, 18 pages, 3 fugures; minor corrections, references added

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• Heterotic Cosmic Strings
• Towards Realizing Dynamical SUSY Breaking in Heterotic Model Building
• Heterotic Standard Model Moduli
• S-Track Stabilization of Heterotic de Sitter Vacua
• Instantons, Assisted Inflation and Heterotic M-theory
• Five-Brane Thresholds and Membrane Instantons in Four-Dimensional Heterotic M-Theory
• Global and Local D-vortices
• DF-strings from D3$\bar{\mathbf{D}}$3 as Cosmic Strings
• Stable and Metastable Cosmic Strings in Heterotic M-Theory