- #1
PRB147
- 127
- 0
Dear every memeber, I encountered the numerical computation on the following
differential equations. I use four-step Runge-Kutta methods to integrate, but
the result is not converge, even if I take the time step (t=0.0001).
please help me why so? Could you please tellme which Fortran subroutine can do the tasks? (I know the following equations has exact solutions.)
[tex]i\frac{dy_1}{dt}=20.0y_2; \\ i\frac{dy_2}{dt}=20.0y_1[/tex]
differential equations. I use four-step Runge-Kutta methods to integrate, but
the result is not converge, even if I take the time step (t=0.0001).
please help me why so? Could you please tellme which Fortran subroutine can do the tasks? (I know the following equations has exact solutions.)
[tex]i\frac{dy_1}{dt}=20.0y_2; \\ i\frac{dy_2}{dt}=20.0y_1[/tex]