Discrete Klein–Gordon models with static kinks free of the Peierls–Nabarro potential
Discrete Klein–Gordon models with static kinks free of the Peierls–Nabarro potential
For the nonlinear Klein-Gordon type models, we describe a general method of discretization in which the static kink can be placed anywhere with respect to the lattice.These discrete models are therefore free of the static Peierls-Nabarro potential.Previously reported models of this type are shown to belong to a wider class …