Hi everyone,
I have currently implemented the improved Wigner d matrix method and
included tests for this, the Wigner D function and the rewrite and represent
functions which are improved in this pull request. If anyone could do any
final testing and review, I'd appreciate it. Thanks.
https://github.com/sympy/sympy/pull/431
Sean
On Mon, Jun 20, 2011 at 13:20, Ondrej Certik <ondrej.cer...@gmail.com>wrote:
> Great job! So lets finish the pull request with all this, write tests and
> get it in. If somebody finds a mistake in sympy, we can fix it later. I
> think that sympy is right too.
>
> Sent from mobile phone
> On Jun 20, 2011 10:49 AM, "Sean Vig" <sean.v....@gmail.com> wrote:
> > On Mon, Jun 20, 2011 at 01:54, Ondrej Certik <ondrej.cer...@gmail.com
> >wrote:
> >
> >> Can you post here your session showing the sympy (wrong) results? It
> >> will make it much easier for me to reproduce what you got and see what
> >> is wrong.
> >>
> >> Thanks
> >> Ondrej
> >
> >
> > Here's what I did
> >>>> from sympy.physics.quantum.spin import *
> >>>> JzKet(1,1).rewrite("Jx") # This agrees with the pdf
> > |1,-1>/2 + 2**(1/2)*|1,0>/2 + |1,1>/2
> >>>> JzKet(1,0).rewrite("Jx") # This does not agree with the pdf
> > 2**(1/2)*|1,-1>/2 - 2**(1/2)*|1,1>/2
> >>>> JzKet(1,-1).rewrite("Jx") # This agrees with the pdf
> > |1,-1>/2 - 2**(1/2)*|1,0>/2 + |1,1>/2
> >
> > That, said, I think that pdf isn't right. I checked Shankar and what it
> has
> > about the rotation operator. From that I worked out the same results as
> > sympy returns, which I attached (note that J in that should be S, and
> thus
> > not have the hbar).
> >
> > Sean
> >
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