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Is there gravity between two photons?

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  1. Sep 18, 2014 #1
    Is there gravity between two photons?
     
  2. jcsd
  3. Sep 18, 2014 #2

    PeterDonis

    Staff: Mentor

  4. Sep 18, 2014 #3
    Thanks!
     
  5. Sep 18, 2014 #4

    dextercioby

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    Science Advisor
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    There's also an argument in Zee's QFT book, pages 427-428.
     
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