Stringy Instantons and Cascading Quivers
arXiv:0707.3126 · doi:10.1088/1126-6708/2007/09/060
Abstract
D-brane instantons can perturb the quantum field theories on space-time filling D-branes by interesting operators. In some cases, these D-brane instantons are novel "stringy" effects (not interpretable directly as instanton effects in the low-energy quantum field theory), while in others the D-brane instantons can be directly interpreted as field theory effects. In this note, we describe a situation where both perspectives are available, by studying stringy instantons in quivers which arise at simple Calabi-Yau singularities. We show that a stringy instanton which wraps an unoccupied node of the quiver, and gives rise to a non-perturbative mass in the space-time field theory, can be reinterpreted as a conventional gauge theory effect by going up in an appropriate renormalization group cascade. Interestingly, in the cascade, the contribution of the stringy instanton does not come from gauge theory instantons but from strong coupling dynamics.
17 pages, 6 figures, harvmac
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Cited by in corpus (18)
- Geometric Transitions and Dynamical SUSY Breaking
- Instanton Induced Open String Superpotentials and Branes at Singularities
- Simple Stringy Dynamical SUSY Breaking
- Lifting D-Instanton Zero Modes by Recombination and Background Fluxes
- Instanton effects in N=1 brane models and the Kahler metric of twisted matter
- Instantons in N=2 magnetized D-brane worlds
- D-Instanton Generated Dirac Neutrino Masses
- Non-perturbative superpotentials across lines of marginal stability
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- Non-perturbative effective interactions from fluxes
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- D-brane instantons and matrix models
- Meta-Stable Brane Configurations with Seven NS5-Branes
- Non-Perturbative Effects on a Fractional D3-Brane
- Stabilizing the Runaway Quiver in Supergravity
- Brane Tilings for Orientifolds
- Geometric Transitions and D-Term SUSY Breaking