  Motivated by the realization of magnetic monopole of Berry curvature by the
energy crossing point, we theoretically study the effect of magnetic monopole
under a uniform electric field in the semiclassical dynamics, which is relevant
to many physical situations such as relaxation through the diabolic point. We
found that the competition between the backward scattering by the monopole
magnetic field and the acceleration by the electric field leads to the bound
state, i.e., capture of a particle near the monopole. Furthermore, the
nonlinearity induced by the magnetic monopole leads to the chaotic behavior in
the transient dynamics, i.e., the transient chaos. We computed characteristic
quantities of the strange saddle which gives rise to the transient chaos, and
verified that the abrupt bifurcation occurs as we tune the system parameter
toward the parameter region in which the system is solvable.
