712 citations · 2.2k across the 30 of their papers we have counts for
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D-brane instanton effects in Type II orientifolds: local and global issues
Mirjam Cvetic, Robert Richter, Timo Weigand
We review how D-brane instantons can generate open string couplings of stringy hierarchy in the superpotential which violate global abelian symmetries and are therefore perturbativ…
Hierarchies from D-brane instantons in globally defined Calabi-Yau Orientifolds
Mirjam Cvetic, Timo Weigand
We construct the first globally consistent semi-realistic Type I string vacua on an elliptically fibered manifold where the zero modes of the Euclidean D1-instanton sector allow fo…
Lifting D-Instanton Zero Modes by Recombination and Background Fluxes
Ralph Blumenhagen, Mirjam Cvetic, Robert Richter +1
We study the conditions under which D-brane instantons in Type II orientifold compactifications generate a non-perturbative superpotential. If the instanton is non-invariant under…
Non-perturbative Yukawa Couplings from String Instantons
Ralph Blumenhagen, Mirjam Cvetic, Dieter Lust +2
Non-perturbative D-brane instantons can generate perturbatively absent though phenomenologically relevant couplings for Type II orientifold compactifications with D-branes. We disc…
Warped Resolved L^{a,b,c} Cones
Mirjam Cvetic, Justin F. Vazquez-Poritz
We construct supergravity solutions describing a stack of D3-branes localized at a point on a blown-up cycle of a resolved L^{a,b,c} cone. The geometry flows from AdS_5 x L^{a,b,c}…
Computation of D-brane instanton induced superpotential couplings - Majorana masses from string theory
Mirjam Cvetic, Robert Richter, Timo Weigand
We perform a detailed conformal field theory analysis of D2-brane instanton effects in four-dimensional type IIA string vacua with intersecting D6-branes. In particular, we explici…