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Operators fields and classical fields

  1. Nov 6, 2007 #1
    Whats the intuition behind the concept of current operator in QFT and PP.
    For example i know that the charge operaor which correspond to space integral of J-o
    when acted upon a fock space of the field of given type gives the total charge in the field
    but what about the remaing components ,how to intepret them?????

    NB: Plz forgive me for being a MORON
  2. jcsd
  3. Nov 6, 2007 #2


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    It is exactly the same as the classical current operator - it represents the flow of charge:

    [tex]J^i\sim\rho v^i[/tex]
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