Power Towers of String Instantons for N=1 Vacua

Abstract

We provide arguments for the existence of novel hereinafter called poly-instanton corrections to holomorphic couplings in four-dimensional N=1 supersymmetric string compactifications. After refining quantitatively the D-brane instanton calculus for corrections to the gauge kinetic function, we explicitly apply it to the Type I toroidal orbifold defined in arXiv:0710.3080 and compare the results to the proposed heterotic S-dual model. This leads us to the intriguing conclusion that N=1 string vacua feature a power tower like proliferation of instanton corrections.

34 pages, 8 figures

References in corpus (7)

• Non-perturbative Yukawa Couplings from String Instantons
• Computation of D-brane instanton induced superpotential couplings - Majorana masses from string theory
• D-brane Instantons on the T^6/Z_3 orientifold
• Non-perturbative and Flux superpotentials for Type I strings on the Z_3 orbifold
• Thresholds for Intersecting D-branes Revisited
• Hierarchies from D-brane instantons in globally defined Calabi-Yau Orientifolds
• String instantons, fluxes and moduli stabilization