Probability current
= Probability current
{wiki}
For a nonrelativistic particle of mass $m$, the probability current is
$$
J=-\frac{i\hbar}{2m}
\left(\psi^*\nabla\psi-\psi\nabla\psi^*\right).
$$
= Probability current
{wiki}
For a nonrelativistic particle of mass $m$, the probability current is
$$
J=-\frac{i\hbar}{2m}
\left(\psi^*\nabla\psi-\psi\nabla\psi^*\right).
$$