عنوان A new high order implicit four-step method with vanished phase-lag and some of its derivatives for the numerical solution of the radial Schrodinger equation عنوان مجله Journal of Modern Methods in Numerical Mathematics نوع پژوهش مقاله چاپ شده کلیدواژهها Phase fitting, Schrodinger equation, phase lag, Ordinary differential equations, P-stable, Symmetric multistep methods. چکیده A new four-step implicit linear eight algebraic order method with vanished phase-lag and its first, second and third derivatives is constructed in this paper. The purpose of this paper is to develop an efficient algorithm for the approximate solution of the one-dimensional radial Schrodinger equation and related problems. In order to produce an efficient multistep method the phase-lag property and its derivatives are used. An error analysis and a stability analysis is also investigated and a comparison with other methods is also studied. The efficiency of the new methodology is proved via theoretical analysis and numerical applications. پژوهشگران علیشکری (نفر اول)