  Three dimensional Weyl semimetals exhibit open Fermi arcs on their sample
surfaces connecting the projection of bulk Weyl points of opposite chirality.
The canonical interpretation of these surfaces states is in terms of chiral
edge modes of a layer quantum Hall effect: The two-dimensional momentum-space
planes perpendicular to the momentum connecting the two Weyl points are
characterized by a non-zero Chern number. It might be interesting to note, that
in analogy to the known two-dimensional Floquet anomalous chiral edge states,
one can realize open Fermi arcs in the absence of Chern numbers in periodically
driven system. Here, we present a way to construct such anomalous Fermi arcs in
a concrete model.
