摘要
Using Hirota’s bilinear derivative method to derive single-breather solutions for the modified nonlinear Schrödinger(MNLS)equation and the derivative nonlinear Schrödinger(DNLS)equation under non-vanishing boundary conditions,along with explicit mixed solutions combining breather-type and pure solitons.The collision dynamics between pure and breather-type solitons in a mixed solution has been graphically demonstrated and ana-lyzed.Furthermore,by setting specific parameter to zero,we naturally ob-tain corresponding single-breather solution and its explicit mixed solutions with pure solitons for the DNLS equation.The mixed soliton solution can asymptotically degenerate into a simple algebraic summation of a simple pure soliton and a breather in the infinite past or the infinite future,which was graphically validated.
