In the following we focus on this special case, where the
two angular components are perpendicular to each other.
With our special choice of e this corresponds to jˆ u5jˆ x . The
probabilities pp/2
( j) (mx ,mz)[px ( j)(mx ,mz) for j520 and mz
518 as well as mz50 are shown in Fig. 4. They are symmetric
with respect to mx50, as also 2e and ez are perpendicular
to each other. For mz50 one obtains a very regular
‘‘comb’’ with every other tooth missing. As all dm vanish for
mx50, Eq. ~14! leads to u2j11
(0) 50 and Eq. ~15! reads as
u2j1n
(0) 52u2j1n22
(0) c2j1n22/c2j1n21 . This shows that the
u2j1n
(0) vanish when n is odd. The dashed curve shows the
classical ~continuous! probability distribution discussed in
the following section. There we also show that for j@1 and
j2umzu!1 the px ( j) are related to harmonic oscillator eigenfunctions.
The corresponding approximation for px ( j)
3(mx ,mz) is shown in Fig. 3 for mz518 as the full curve.