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B Energy density of charged capacitor via QFT

  1. Jul 4, 2016 #1
    From the view point of quantum field theory how does one describe the electromagnetic energy density between the plates of a charged capacitor?

  2. jcsd
  3. Jul 5, 2016 #2

    Paul Colby

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    Gold Member

    When using the coulomb gauge, a static electric field appears as a classical field component.
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