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There has been recent progress towards understanding the dynamics ofworld-volume fermions that arise as open-string modes from brane intersectionsin the probe limit $(N_f/N_c \rightarrow 0)$. In this work we consider allpossible BPS brane junctions in Type IIA/B supergravity theories. We study indetail the dynamics of these states by deriving their equations of motion. Weshow the expected degeneracy of the bosonic and fermionic fluctuations as isexpected due to the preserved supersymmetry. We also give some supportingevidence and refine the notion that these states can effectively describebaryon operators in a certain regime of the field theory's parameter space. Ourpiece of evidence is the demonstration of the expected scaling of the mass inthe large-$N_c$ limit of the theory for these fermionic states; $M^2 \simN^2_c$. Finally, we explain analytically the avoided level crossing that wasobserved in a previous work after the inclusion of higher dimension operatorsin the field theory.

Fermions and baryons as open-string states from brane junctions