  Axion electrodynamics governs electromagnetic properties of Weyl metals.
Although transmission and reflection measurements of light have been proposed
to confirm the axion electrodynamics, there are still lack of theoretical
proposals for macroscopic nonlocal transport phenomena in Weyl metals. In this
paper, we present nonlocal transport phenomena in time reversal symmetry-broken
(TRSB) Weyl metals. Solving the axion electrodynamics numerically, we show that
such nonlocal transport phenomena arise from the negative longitudinal
magneto-resistivity (NLMR), combined with the anomalous Hall effect (AHE) in
the axion electrodynamics. Since this nonlocal transport occurs beyond the
mesoscopic scale, we conclude that these nonlocal properties have nothing to do
with Fermi arcs, regarded to be clear evidence of the axion electrodynamics in
the bulk.
