Jad. Wattis, Solitary waves in a diatomic lattice: analytic approximations for a wide range of speeds by quasi-continuum methods, PHYS LETT A, 284(1), 2001, pp. 16-22
We extend the quasi-continuum method of approximation to find waves of gene
ral speed in a diatomic lattice. Our results include as a special case the
one speed which previous methods have found: we find the shape of nonlinear
waves of arbitrary velocity up to some maximum speed. (C) 2001 Published b
y Elsevier Science B.V.