are these different quantum mechanically?(adsbygoogle = window.adsbygoogle || []).push({});

I thought they were the same since probability current density obeys the continuity equation as the electric current density must also.

prob. current density: ~ psi* grad psi - psi grad psi*

electric current density ~ <psi| p |psi>

are they the same?

**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!

# Probability current versus electric current

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