Stringy instantons and quiver gauge theories

By B. Florea, S. Kachru, John McGreevy, N. Saulina. 2006

213 citations recorded by the source corpus.

We explore contributions to the 4D effective superpotential which arise from Euclidean D3 branes (''instantons'') that intersect space-filling D-branes. These effects can perturb the effective field theory on the space-filling branes by nontrivial operators composed of charged matter fields, changing the vacuum structure in a qualitative way in some examples. Our considerations are exemplified throughout by a careful study of a fractional brane configuration on a del Pezzo surface.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/3b77898d1a432f69a7da36ee7d2cd82c5524aa49

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Citations in the corpus

The Weak Gravity Conjecture in three dimensions (2016, background): “In theories with Chern-Simons terms and monopoles, gauge invariance requires [44–47] that any such monopole spits out N units of electric charge.”
de Sitter string vacua from dilaton-dependent non-perturbative effects (2012, background): “For a discussion along these lines see for instance [10].”
d-Brane Instantons in Type II Orientifolds (2009, background): “In both variants D-brane instantons can account not only for the presence of such a Polonyi term [22, 24] but also give an appealing explanation of the hierarchical suppression of its scale μ.”
Axion inflation in type II string theory (2007, background): “(τ,G) e inβ α Tβ , (4.4) with new coeﬃcient functions Aˆ α independent of τ,Ga.9 For our purposes it will be 9An explicit compactiﬁcation, where such a superpotential is induced, can be found in ref. [60]. 20 suﬃcient to consider the ﬁrst few terms in Θ(τ,G). For example, consider a set-up with one ”
Explicit de Sitter flux vacua for global string models with chiral matter (2013, background): “The number of E3 zero-modes in the fundamental representation of the hidden U(4) gauge group is [46, 54–56]:”
GUTs in Type IIB Orientifold Compactifications (2008, background): “On the other hand, investigations of non-perturbative corrections for Type II orientifold models [25, 26, 27] have revealed that the 10 10 5H Yukawa coupling can be generated by Euclidean D-brane instantons wrapping suitable cycles Γ in the internal manifold with the right zero mode structure [28].”
Model building with $F$-theory (2008, methodology): “The rules for D-instanton calculus in type IIb backgrounds have recently been clarified [51, 52], using the concept of ‘Ganor strings’ [53], which give collective coordinates of the instanton.”
Moduli Stabilisation versus Chirality for MSSM like Type IIB Orientifolds (2007, background): “However, similar to [67], we expect both vector-like bosonic and fermionic zero modes, because, as shown in figure 1(b), the rigid E3-instanton actually contains both DD7A = D5 + D6 and DD7B = D5 as a sub-locus.”
Spacetime instanton corrections in 4D string vacua: The Seesaw mechanism for D-Brane models (2006, background): “Note: We thank the authors of [ 20 ] and [21] for pointing out to us their work (see also [22]), which likewise deals with instanton corrections in Type II D-brane models.”