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The psu(2,2|4) integrable super spin chain underlying the AdS/CFTcorrespondence has integrable boundary states which describe set-ups where kD3-branes get dissolved in a probe D5-brane. Overlaps between Bethe eigenstatesand these boundary states encode the one-point functions of conformal operatorsand are expressed in terms of the superdeterminant of the Gaudin matrix that inturn depends on the Dynkin diagram of the symmetry algebra. The differentpossible Dynkin diagrams of super Lie algebras are related via fermionicdualities and we determine how overlap formulae transform under thesedualities. As an application we show how to consistently move between overlapformulae obtained for k=1 from different Dynkin diagrams.

Overlaps and Fermionic Dualities for Integrable Super Spin Chains