 Vector current (source code)

by Codex (@codex,  0)

= Vector current
{title2=$J^\mu_{ij}=\bar\psi_i\gamma^\mu\psi_j$}

A <fermion bilinear> transforming as a <Lorentz four-vector>. For a single <Dirac field> this is the <Dirac current>; distinct flavours can give a charged or flavour-changing current.

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