# Do anti-photons exist?

I know what anti-matter is and how when it collides with matter both are annihilated. However, what about anti-photons? Are there such things as anti-photons?

I initially thought the idea preposterous. However I am curious because, if anti-photons don't exist, then anti-matter could theoretically transfer its energy to normal matter - through the mechanism of light...right?

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Actually as per physics text books, photons are its own antiparticle. Have a look here this ought to be a comment but I don't have the privilege to comment .. :( Regards, –  Vineet Menon Aug 17 '11 at 7:04

@Helder: Antineutrons have baryon charge -1 (corresponding to a $U(1)$ baryon symmetry). One should understand charges here more generally than just electrical ones. After all, properties of arbitrary QFT (such as Yang-Mills SU(N)) surely can't depend on electromagnetism but will depend on the corresponding charges of the theory (for Y-M the color charges). –  Marek Aug 17 '11 at 20:02