What happens when a photon hits and antiparticle?

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SUMMARY

When a photon interacts with an antiparticle, the outcome is identical to its interaction with a normal particle. The photon does not disappear; rather, its energy and frequency remain unchanged. This interaction aligns with the principles outlined in Hawking's theory of radiation, which does not specify particular types of particles, indicating that any particle species can participate in this phenomenon. The distinction between normal particles and antiparticles is arbitrary and does not affect the fundamental behavior of photons.

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stone1
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This is probably a crazy question, but what happens to a photon when it hits an antiparticle? Say the same type of antiparticle that Hawking uses to derive his Hawking radiation. Does the photon disappear? Is its energy/frequency reduced?
 
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Exactly the same happens, as if a photon hit a "normal" particle. There is no fundamental distinction between normal and anti particles, the classification is arbitrary.

Hawking did not postulate a specific kind of particles in his radiation. Any species will do.
 

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