ognik
- 626
- 2
Hi - on the last chapter of this course and was feeling much better about it all, but I now confess to being back in my normal state - confused. I am given a simple fortran program (code attached in the zip file) and asked to investigate its accuracy and stability, for various values of $$\Delta$$t and lattice spacings. The program is an implementation of:
$ {\phi}^{n+1} = \frac{1}{1 + H\Delta t}\left[{\phi}^{n} + S^n \Delta t \right] $ (H is hermitian)
I have run this program for various sets of values - and the output all looks so similar that I can't see anything to discuss. The errors are similar magnitude. Some combinations of input don't produce any output - but that should be just a validation issue, as I say it is a simple program with no frills.
Someone give me a clue or 2 please...
$ {\phi}^{n+1} = \frac{1}{1 + H\Delta t}\left[{\phi}^{n} + S^n \Delta t \right] $ (H is hermitian)
I have run this program for various sets of values - and the output all looks so similar that I can't see anything to discuss. The errors are similar magnitude. Some combinations of input don't produce any output - but that should be just a validation issue, as I say it is a simple program with no frills.
Someone give me a clue or 2 please...