Solitary wave for a nonintegrable discrete nonlinear Schrödinger equation in nonlinear optical waveguide arrays

Ma Li-Yuan¹, Ji Jia-Liang², Xu Zong-Wei³, Zhu Zuo-Nong^{3, †}

(color online) (a) Stationary solitary wave in physical space with parameters ω_s = 1, α = −0.4, β = 1, h = 0.25. (b), (c) Discrete spectrum contains a pair of real eigenvalues and two pairs of internal modes.