Why electrons don't emit pairs of photons ?

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Online Nilak

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Why electrons don't emit pairs of photons ?
« on: 17/10/2016 11:52:32 »
I've tried to imagine how electromagnetic waves would propagate and it makes more sense to me that these waves should go both ways. The waves seem to be restricted on a particular direction but I don't see why they cannot go both ways.

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Offline GoC

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Re: Why electrons don't emit pairs of photons ?
« Reply #1 on: 17/10/2016 17:47:23 »
Light goes in all direction from a flash. One direction being absorbed by mass allowing only one direction is just vector focusing.

What is the physical properties of your photon understanding suggesting electros do not emit pairs of electrons?

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Online Nilak

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Re: Why electrons don't emit pairs of photons ?
« Reply #2 on: 17/10/2016 19:08:11 »
Light goes in all direction from a flash. One direction being absorbed by mass allowing only one direction is just vector focusing.

What is the physical properties of your photon understanding suggesting electros do not emit pairs of electrons?


Spontaneous emission is the way photons are generated. This explanation never mentions a pair of photons  being emitted.
https://en.m.wikipedia.org/wiki/Spontaneous_emission

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Offline GoC

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Re: Why electrons don't emit pairs of photons ?
« Reply #3 on: 17/10/2016 19:18:07 »
How could it, main stream has no idea of what a photon physically looks like. hf of what?

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Offline Sergio_Prats

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Re: Why electrons don't emit pairs of photons ?
« Reply #4 on: 20/10/2016 23:36:28 »
Spontaneous emission is the way photons are generated. This explanation never mentions a pair of photons  being emitted.

Spontaneous emission does not need two photons to occur so each process emits only one photon at time. In Quantum Electrodynamics there are other process like the pair annihilation where two photons are created. In these case two photons are needed because with only one you cannot equal the energy and momentum of the destroyed electron and positron.