johann1301
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Is there gravity between two photons?
Is There Gravity Between Two Photons?
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If they are not moving in the same direction, yes. See this post from a previous PF thread:
https://www.physicsforums.com/showpost.php?p=4824743&postcount=12
https://www.physicsforums.com/showpost.php?p=4824743&postcount=12
johann1301
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Thanks!
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There's also an argument in Zee's QFT book, pages 427-428.
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