[FeLiXe]

seems to be a a continuously differentiable, normalisable function (so there should be no problem with the variation principle)

if I calculate the expected value of the hydrogen Hamilton operator, I get an energy of -1.20 Hartree. That is much lower than that of the 1s function (-.5) how can that be?

If I split it up I get a modest value for the potential energy: -0.682

and then I have a negative(!) kinetic energy of -0.519.

How does that make sense? How can I have negative kinetic energy?

Thanks a lot for any help or ideas what could be wrong. I thought of it for quite a while and I couldn't find anything.

[FeLiXe]

I think I know what's wrong: my "function" is not unique at the origin. I guess that would do the trick