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We know that photons are the antiparticles of themselves and if they interact with each other through higher order process do they annihilate and again produce photons?

Here is the Phys.SE question that made me ask this question.

share|cite|improve this question… here is the link which made me to ask this question and i didnt found what i searched for? – idiosincrasia23 Feb 19 '13 at 10:56
have a look at for photon photon interactions in general – anna v Feb 19 '13 at 10:59
Related: and links therein. – Qmechanic Nov 8 '14 at 13:50

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