How does the electric field of an electron compare to its probability wave?

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Discussion Overview

The discussion revolves around the relationship between the electric field of an electron and its probability wave, particularly in the context of quantum mechanics and classical electromagnetism. Participants explore concepts related to the behavior of electric fields in the presence of other charges and the nature of wave function collapse in quantum experiments.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • One participant describes the electric field of an electron as spreading evenly in space and suggests that it becomes distorted in the presence of a proton, leading to a dipole-like configuration at large distances.
  • Another participant argues that mixing classical and quantum concepts leads to confusion and asserts that the electric field of a charged particle is calculated by summing contributions from all charges, regardless of their arrangement.
  • A participant questions the relationship between the collapse of the electric field and the collapse of the probability wave, suggesting a potential correlation due to both phenomena occurring when the electron interacts with a detector.
  • There is a discussion about the evolution of the probability wave function over time, with references to Feynman's explanations and whether this wave function spreads at the speed of light.
  • One participant emphasizes the need to distinguish between classical electromagnetism, quantum mechanics, and quantum electrodynamics (QED), stating that these theories cannot be mixed without leading to misunderstandings.
  • Another participant clarifies that the electric field of the electron does not change when a proton is introduced; rather, the total electric field is the sum of both fields.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between electric fields and wave functions, with no consensus reached on how these concepts interact. There is a clear disagreement on the implications of introducing a proton to the system and the nature of wave function propagation.

Contextual Notes

Participants highlight the limitations of mixing classical and quantum concepts, noting that the breakdown of non-relativistic quantum mechanics leads to the necessity of more advanced theories like QED and relativistic quantum field theory.

DarkMattrHole
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TL;DR
Is there a relationship between the two?
A single electron sitting in a void has an electric field that spreads out evenly in all directions as far as there is open empty space to allow it, is this roughly a correct statement?

Let's say we now introduce a singe proton into the void, 100 miles from the electron - it will also have an electric field, is that correct?, of the opposite sign.

Now the electric field of the electron will be distorted, as will that of the proton. It will be easier for the electron field to spread into the direction of the proton, and so it will, and all the electric field lines will edge towards the imaginary line between electron and proton, and edge away from the opposite direction and wrap around on a long arc towards the proton, correct? The electric field has been redirected and covers a bit less volume of space, as the strength of field is concentrated to a region in the vicinity around the electron and proton. From a distance of 1000 miles the electric field would look like an electric dipole. From a much greater distance no field would be detected as the field would appear locally neutralized.

The electron goes where the field lines tell it to go, and the field lines go mostly towards the proton (and vise versa) so the particles approach each other. When the particles unite and the electron is snug in an orbital the electric field will have 'collapsed' into a single place in space - the orbital.

Is the former description even close to accurate?
How does the collapse of the electric field - perhaps when an electron hits a proton on the back-wall of double split electron experiment - compare and contrast to the collapse of the probability wave in that experiment? How separate are these two things? I know that one is a physical field and the other is a calculation, so it's how closely the two things relate that I'm interested. If you got this far in my long winded question, thanks.
 
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DarkMattrHole said:
Is the former description even close to accurate?

Not if you're talking about a quantum description, no. Trying to mix classical and quantum concepts just causes confusion.
 
DarkMattrHole said:
How does the collapse of the electric field...
Even classically, there’s no such thing. No matter how we add or remove charges or move them around, the electric field is calculated by summing the contributions from all the charged particles, allowing for the ##1/r^2## effect of distance from the charge.

The wave function of a charged particle is completely unrelated to its electric field, and wave function collapse has completely different mathematical properties.
 
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Thanks, Nugatory. That's good to know. I was wondering if there could be a correlation because the electric field of the electron also sort of collapses onto the detector, or a wall, or wherever the electron ends up residing.

Also related to the question if i may - I am familiar with the Fenyman QED book explanation of counting beans using spin and transit time to predict probabilities, but the descriptions didn't go into the evolution of the probability waveform over time, however, i think Feynman suggests it spreads out uniformly in three dimensions, taking all paths and reflections as it spreads until the electron ultimately gets captured by one of the detectors, or it shows up stuck in an orbital in a wall atom somewhere, or elsewhere, all with probabilities according to the wave function. Feynman was describing partial reflection of light through sheets of of glass but didn't specify, does this spreading of the wave function proceed at the speed of light? If so, does the wave function for an electron also spread out at C? Thanks.
 
In classical EM, you need to learn about superposition. The total field can be found by adding each of many separate solutions to Maxwell's equations.

DarkMattrHole said:
Let's say we now introduce a singe proton into the void, 100 miles from the electron - it will also have an electric field, is that correct?, of the opposite sign.

Now the electric field of the electron will be distorted, as will that of the proton.
No the E-field of the electron doesn't change when the proton is added. The total E-field changes, it is just the sum of the two E-fields.
 
DarkMattrHole said:
Also related to the question if i may - I am familiar with the Fenyman QED book explanation of counting beans using spin and transit time to predict probabilities, but the descriptions didn't go into the evolution of the probability waveform over time, however, i think Feynman suggests it spreads out uniformly in three dimensions, taking all paths and reflections as it spreads until the electron ultimately gets captured by one of the detectors, or it shows up stuck in an orbital in a wall atom somewhere, or elsewhere, all with probabilities according to the wave function. Feynman was describing partial reflection of light through sheets of of glass but didn't specify, does this spreading of the wave function proceed at the speed of light? If so, does the wave function for an electron also spread out at C? Thanks.

You have got confused between three subjects: Classical EM, which involves the electric field of charged particles, such as electrons; QM, which involves the wavefunction for a particle such as the electron; and, QED, which is a more advanced quantum theory for the behaviour of light and matter.

These are three separate theories and you cannot mix and match concepts from them.

QM does not describe the propagation of the wavefunction. And, in fact, ultimately this leads to the breakdown of the non-relativistic theory of QM and the need for QED and relativistic QFT.
 

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