can anyone give me any ideas on how to evaluate this:(adsbygoogle = window.adsbygoogle || []).push({});

<z>=<[tex]\Phi[/tex]1|z|[tex]\Phi[/tex]2>

(for say hydrogen wavefunctions). Similarly

<x+iy>=<[tex]\Phi[/tex]1|x+iy|[tex]\Phi[/tex]2>

FYI, I'm trying to understand how radiation is polarised (an external B field polarises radiation, so we must consider the dipole transition matrix thus:

<r>=<[tex]\Phi[/tex]1|r|[tex]\Phi[/tex]2>

so I am simply resolving 'r' into two components (in the xy plane and z axis).

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# The expectation of 'z' and 'x+iy'

**Physics Forums | Science Articles, Homework Help, Discussion**