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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.

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Four Seasons
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  • http://physics.stackexchange.com/questions/54323/collision-of-two-photons here is the link which made me to ask this question and i didnt found what i searched for? – Four Seasons Feb 19 '13 at 10:56
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    have a look at http://en.wikipedia.org/wiki/Two-photon_physics for photon photon interactions in general – anna v Feb 19 '13 at 10:59
  • Related: http://physics.stackexchange.com/q/1361/2451 and links therein. – Qmechanic Nov 08 '14 at 13:50

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