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Philipsmett
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for example, when does an electron repel another electron with an electromagnetic disturbance?
Philipsmett said:when does an electron repel another electron with an electromagnetic disturbance?
Same charges always repel.Philipsmett said:for example, when does an electron repel another electron with an electromagnetic disturbance?
when two electrons repel by virtual photon, can this photon transform into virtual electron positron pair?PeterDonis said:I'm not sure what you mean. Can you narrow your question to a specific experimental scenario or a specific theoretical model?
Philipsmett said:when two electrons repel by virtual photon, can this photon transform into virtual electron positron pair?
Want to say that there is a possibilityPeterDonis said:If you mean, can we observe this, no. We don't even observe virtual photons exchanged by electrons that are repelling each other; virtual photons are a property of a particular theoretical model. In that theoretical model, yes, some of the probability amplitude for electrons to repel each other is due to the creation (and destruction) of virtual electron-positron pairs from (and to) virtual photons. But this theoretical model has significant limitations and should not be taken too literally. We have an Insights article that discusses this:
https://www.physicsforums.com/insights/misconceptions-virtual-particles/
Philipsmett said:Want to say that there is a possibility
that a virtual photon on its way turns into a virtual electron positron pair?
Philipsmett said:as far as I understand, the more complex the process, the less likely it is to origin?
A virtual photon is a particle that is not directly observable but is instead a mathematical construct used to describe the interactions between particles in quantum field theory. It carries the electromagnetic force and can turn into other particles, such as a virtual electron-positron pair.
In quantum field theory, particles are constantly fluctuating in and out of existence. This includes virtual particles, such as virtual photons. These virtual particles can interact with each other, and under certain conditions, a virtual photon can "split" into a virtual electron-positron pair.
This process is important in understanding the behavior of particles and their interactions. It also plays a role in phenomena such as the emission and absorption of light, as well as other fundamental processes in the universe.
Yes, under certain conditions, a virtual electron-positron pair can become real particles. This can happen in high-energy collisions, where the energy is sufficient to "materialize" the virtual particles into real ones.
The virtual photon is the carrier particle of the electromagnetic force, meaning it is responsible for transmitting the force between charged particles. This force is crucial in holding atoms and molecules together and is one of the four fundamental forces in nature.