- #1

Malamala

- 299

- 26

$$\frac{1}{\sqrt{4 \pi}}(-\sigma r /r )\chi$$

where ##\sigma## are the Pauli matrices and ##\chi## is the spinor. Can someone point me towards a derivation of this? Also can this be generalized to other s and l (or at least other l for s=1/2), can someone point me towards that, too, if that is the case? Thank you!