SUSY Gauge Dynamics and Singularities of 4d N=1 String Vacua

Abstract

Many N=1 heterotic string compactifications exhibit physically mysterious singularities at codimension one in the moduli space of vacua. At these singularities, Yukawa couplings of charged fields develop poles as a function of the moduli. We explain these conformal field theory singularities, in a class of examples, as arising from non-perturbative gauge dynamics of non-perturbative gauge bosons (whose gauge coupling is the sigma model coupling) in the string theory.

17 pages, harvmac big

References in corpus (5)

• Small Instantons in String Theory
• D-Branes and Topological Field Theories
• Evidence for Heterotic/Heterotic Duality
• Enhanced Gauge Symmetry in Type II String Theory
• N=1 Dual String Pairs and Gaugino Condensation

Cited by in corpus (14)

• Self-tuning flat domain walls in 5d gravity and string theory
• Open string instantons and superpotentials
• On Four-Dimensional Compactifications of F-Theory
• Chirality Changing Phase Transitions in 4d String Vacua
• Heterotic Resolved Conifolds with Torsion, from Supergravity to CFT
• Small Instantons and Weak Scale String Theory
• Some Features of (0,2) Moduli Space
• Gauge Fields, Scalars, Warped Geometry, and Strings
• Closing the Generation Gap
• Quantum modified moduli spaces and field dependent gauge couplings
• Singular Yukawa and gauge couplings in d=4 Heterotic String Vacua
• Aspects of N=1 String Dynamics
• Singularities in d=4, N=1 Heterotic String Vacua
• Extremal Transitions in Heterotic String Theory