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arXiv · 0902.1694

Stringy Instanton Effects in Models with Rigid Magnetised D-branes

C. Angelantonj·C. Condeescu·E. Dudas·M. Lennek
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Abstract

We compute instantonic effects in globally consistent T^6/Z2xZ2 orientifold models with discrete torsion and magnetised D-branes. We consider fractional branes and instantons wrapping the same rigid cycles. We clarify and analyse in detail the low-energy effective action on D-branes in these models. We provide explicit examples where instantons induce linear terms in the charged fields, or non-perturbative mass terms are generated. We also find examples where the gauge theory on fractional branes has conformal symmetry at one-loop, broken by instantonic mass terms at a hierarchically small energy scale.

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C. Angelantonj, C. Condeescu, E. Dudas, M. Lennek. 2009-02-10. Stringy Instanton Effects in Models with Rigid Magnetised D-branes. https://doi.org/10.1016/j.nuclphysb.2009.03.018

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