Thresholds for breather solutions on the Discrete Nonlinear Schrödinger Equation with saturable and power nonlinearity

J. Cuevas, J. C. Eilbeck, N. I. Karachalios

We consider the question of existence of periodic solutions (called breather solutions or discrete solitons) for the Discrete Nonlinear Schrödinger Equation with saturable and powe…