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math-ph2005
Multiscale expansion of the lattice sine--Gordon equation
Xiaoda Ji, Decio Levi, Matteo Petrera
We expand a discrete--time lattice sine--Gordon equation on multiple lattices and obtain the partial difference equation which governs its far field behaviour. Such reduction allow…
math-ph2005★ 17 cited
Discrete Reductive Perturbation Technique
Decio Levi, Matteo Petrera
We expand a partial difference equation (PE) on multiple lattices and obtain the PE which governs its far field behaviour. The perturbative--reductive approach is here perfor…