  Shift manipulation of intrinsic localized mode (ILM) is numerically discussed
in an ac driven Klein Gordon lattice. Before the manipulation, we introduce the
2-degree of freedom nonlinear system, which is obtained by reducing the
lattice. In the reduced system, two localized modes correspond to ILMs in the
original system. These two localized modes are switched by changing a coupling
constant adiabatically. Based on the result obtained in the reduced system, we
numerically show that the shift manipulation of ILM is achieved, like a
particle, by using an adiabatic change of coupling constant between the
targeted sites in the lattice.
