  Due to the Weyl anomaly, an axial vector field produces novel anomalous
chiral currents in spacetime with boundaries. Remarkably, the chiral current is
not invariant under the gauge transformation of axial vector fields. As a
result, more potential terms appear, and the chiral current becomes larger than
the electric current near the boundary. This paper investigates the anomalous
chiral current in AdS/BCFT. We find that the minimal holographic model of the
axial vector field cannot produce the expected chiral current. To resolve this
problem, we propose adding a suitable boundary action. Furthermore, we notice a
similar situation for holographic condensation. Finally, we obtain the shape
dependence of holographic chiral current and verify that it agrees with the
field-theoretical result.
