Hi,(adsbygoogle = window.adsbygoogle || []).push({});

The operators representing the components of angular momentum are incompatible, since

[tex][L_x,L_y] = i\hslash L_z [/tex].

If you apply the uncertainty principle to this you get:

[tex]\sigma_{L_x}\sigma_{L_y} \geq \tfrac{\hslash}2|\langle L_z \rangle|[/tex].

But what if [tex]\langle L_z \rangle = 0[/tex]? Then the HUT does not prevent simultanoeus eigenstates of Lx and Ly or what?

**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!

# Angular momentum and the HUT

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