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B Dark matter variations on Earth

  1. Sep 1, 2017 #41


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    Staff: Mentor

    QED does model electrostatic interactions using virtual photons though, and Feynman diagrams incorporate both real and virtual particles if I remember correctly.
  2. Sep 1, 2017 #42


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    Gold Member

    A field is just photons. If there is nothing to transmit electromagnetic interactions, there is no electromagnetism. Coulomb's law absolutely requires photons in QED.
  3. Sep 1, 2017 #43
    Do you see any from a static charge? Where are they? What frequency? Virtual perhaps but ... long story ...
  4. Sep 2, 2017 #44


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    Staff: Mentor

    Photons have to be possible to have static fields in QFT, even if there are no photons flying around.
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