Linked Questions
82 questions linked to/from Deriving the Coulomb force equation from the idea of virtual photon exchange?
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The exchange of photons gives rise to the electromagnetic force [duplicate]
Pardon me for my stubborn classical/semiclassical brain. But I bet I am not the only one finding such description confusing.
If EM force is caused by the exchange of photons, does that mean only when ...
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answer
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Deriving Coulomb's law from quantum electrodynamics [duplicate]
Is it possible to derive the Coulomb's law using the principles of quantum electrodynamics? How?
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Using photons to explain electrostatic force [duplicate]
I am trying to understand the idea of a force carrier with the following example.
Let's say there are two charges $A$ and $B$ that are a fixed distance from each other. What is causing the force on $...
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1
answer
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What is the QFT picture of a static electric field? [duplicate]
Accelerating charge generates electromagnetic waves and loses energy, in QFT terms it emits photons that carry it away. What of a static charge? Moving photons are usually associated with waves, which ...
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Where do the photons mediating the electromagnetic force come from? [duplicate]
The electromagnetic field is mediated by photons (energy quanta). Its range is infinite, the interaction only weakens quadratically with distance due to the area of an expanding virtual sphere.
Where ...
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1
answer
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How to describe electron-electron repulsion using virtual photon exchange? [duplicate]
Electron-electron repulsion can be described deterministically using Coulomb's law $$F = k\frac{e^2}{r^2}$$
Given two initially stationary electrons, the complete time evolution (distances apart, ...
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2
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2
answers
532
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Photon as a mediator of electric field [duplicate]
How can a photon (which has momentum) from one electrically charged particle to an oppositely charged particle cause these particles to be pulled toward each other - or how can a magnetic field cause ...
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1
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Do positively charged particles exchange photons? [duplicate]
I learned in this video and in this answer that electrons repel from each other by exchanging photons. This makes sense when it comes to electrons, but what happens when two protons or two positrons ...
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2
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Action at a distance in Quantum Field Theory [duplicate]
Definitely, I don't mean entanglement here:
Suppose we have an electron and proton situating some distance apart, there is an electrostatic force between them, and this force is mediated by virtual ...
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0
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Quantum field theory of electrostatics [duplicate]
I don't understand how anything in electrostatics, including electric potential and magnetic fields, is possible via the exchange of particles. Since particles are essentially fluctuations in these ...
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0
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The mechanism behind the Lorentz force [duplicate]
It has been known for 130 years that a moving electron entering an external magnetic field is deflected (Lorentz force, Hall effects, synchrotrons). What I have never read is a description of how this ...
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Force-carrying particles for electrostatic force [duplicate]
As I understand, Nuclear Fusion occurs when the nuclear forces overcome the electrostatic forces that act repulsively. But, what are these electrostatic forces? Are there force-carrying particles just ...
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Quantum mechanical photon exchange [duplicate]
Background: While trying to understand the Standard Model I stumbled on a paper that explained it in very simple terms. I recognized that I don't even understand the quantum mechanical way of the ...
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1
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Is the quantum analogue of electrostatic field photon? What will be its wavelength then? [duplicate]
When two charges are separated there is an electrostatic field between two. Quantum mechanically, is it actually the discrete energy packet or photons that's travelling from one charge to another? If ...
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Quantum mechanical explanation of electrostatic force [duplicate]
Feynman diagram explains repulsion of electrons by means of photon exchange. Similarly can we explain repulsion of protons and attractions between protons and electrons?
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