  The occurrence of an inverse current, where the sign of the induced current
is opposite to the applied force, is a highly counterintuitive phenomenon. We
show that inverse currents in coupled transport (ICC) of energy and particle
can occur in a one-dimensional interacting Hamiltonian system when its
equilibrium state is perturbed by coupled thermodynamic forces. This seemingly
paradoxical result is possible due to the self-organization occurring in the
system in response to the applied forces.
