When does a photon know its time to change into a particle, antiparticle

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Is it just based on once it reaches a threshold amount of energy, if so how does it know what type of particle pair it should convert into.

Bonus Question: When pair production does happen, are the particles ‘spawned in’ at different locations otherwise wouldn’t they just instantly annihilate each other. If it does ‘spawn in’ at different locations wouldn’t that require some sort of information transfer via a force or a particle?

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Anonymous 0 Comments

Photon don’t do “time”. They have a certain random probability at any instant of spawning a particle in an event. It’s not like a tiny timer inside.

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