D-brane Instantons in 4D Supersymmetric String Vacua
Nikolas Akerblom, Ralph Blumenhagen, Dieter Lust, Maximilian, Schmidt-Sommerfeld
TL;DR
This paper reviews the role of D-instantons in intersecting D-brane models, focusing on their applications in computing superpotential couplings and gauge kinetic function corrections in type IIA string theory.
Contribution
It presents recent instanton calculus methods applied to compute physical couplings and corrections in 4D supersymmetric string vacua, advancing understanding of non-perturbative effects.
Findings
Charged matter superpotential couplings computed using instanton calculus.
One-loop gauge kinetic function corrections derived from threshold corrections.
Insights into non-perturbative effects in type IIA orientifold models.
Abstract
We review some aspects of D-instantons in intersecting D-brane models. In particular, we present applications of the recently proposed instanton calculus to computations of charged matter superpotential couplings and corrections to the gauge kinetic function in the low energy effective action of type IIA orientifolds. As an interesting byway, we also discuss how one-loop corrections to the gauge kinetic function can be deduced from gauge threshold corrections in the type IIA setting.
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