Can two photons combine to give a local field with spin 2?

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Can two photons combine to give a local field with spin 2
Can two photons combine to give a local field with spin 2
 
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No. They cannot. There is no direct photon-photon interaction, nor a photon-photon bound state (similar to a hydrogen atom, for example).
 
dextercioby said:
No. They cannot. There is no direct photon-photon interaction, nor a photon-photon bound state (similar to a hydrogen atom, for example).
What about up conversion? (Opposite of down conversion). Admittedly I don’t know much about that other than the name.
 

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