Quantum Distance? (See me derive it.)

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Discussion Overview

The discussion revolves around the concept of "quantum distance" and its derivation based on relationships between charge, magnetic flux, and conductivity. Participants explore whether distance can be considered quantum in nature, drawing on principles from quantum physics and dimensional analysis.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant asserts that since charge and magnetic flux are quantum, the ratio of charge to magnetic flux is also quantum, leading to the conclusion that distance is quantum.
  • Another participant challenges the terminology, suggesting that "is quantum" should be "is quantised," and argues that while conductivity can exhibit quantum effects, it does not imply fundamental steps of conductivity.
  • A later reply reiterates the correction regarding terminology and emphasizes that conductivity can be expressed as a fraction of quantised values, questioning if the same can apply to distance.
  • Another participant notes that while resistance can be quantised in specific conditions (e.g., quantum Hall effect), it does not imply that resistance is always quantised like charge.
  • Concerns are raised about the dimensional analysis presented, with a participant providing corrections regarding the units of electric charge, magnetic flux quantum, and the quantum Hall effect constant, arguing that the derivation does not yield a length dimension.

Areas of Agreement / Disagreement

Participants express disagreement on the interpretation of "quantum" versus "quantised" and whether distance can be classified in the same manner as charge or conductivity. The discussion remains unresolved regarding the validity of the original claim about distance being quantum.

Contextual Notes

The discussion includes limitations in dimensional analysis and the need for clarity in terminology. There are unresolved assumptions about the definitions of quantum properties and their implications for distance.

LiteHacker
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As per: https://en.wikipedia.org/wiki/Elementary_charge
Charge is quantum.

As per https://en.wikipedia.org/wiki/Magnetic_flux_quantum
Magnetic flux is quantum.

Magnetic flux is measured as follows:
[itex]Magnetic flux = \frac{Energy * Time}{Charge}[/itex]


Thus:
[itex]\frac{Charge}{Magnetic flux}[/itex] is quantum. (Quantum/Quantum = Quantum)

It has the measurement:
[itex]\frac{Charge}{Magnetic flux} = \frac{Charge ^{2}}{Energy * Time}[/itex]



As per: https://en.wikipedia.org/wiki/Von_Klitzing_constant
Conductivity is quantum.

Conductivity is measured as follows:
[itex]Conductivity = \frac{Charge ^{2}}{Energy * Time * Distance}[/itex]


Taking the top two questions:
[itex]Conductivity = \frac{\frac{Charge}{Magnetic flux}}{Distance}[/itex]

Quantum = Quantum / Distance
Quantum / Quantum = Distance = Quantum

Distance is quantum.

Anybody see anything wrong with this?

Thank you,
Veniamin
 
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"is quantum" does not make sense. I think you mean "is quantised".

Conductivity can show quantum effects, but this does not mean that there are fundamental steps of conductivity.
 
mfb said:
"is quantum" does not make sense. I think you mean "is quantised".
Indeed this is what I meant.

mfb said:
Conductivity can show quantum effects, but this does not mean that there are fundamental steps of conductivity.
Instead of there being fundamental steps of conductivity, conductivity is noted to be rational. (You can express it as a fraction of quantised values.)
Can the same be said for distance then, as per what was shown above?

Thank you,
Veniamin
 
LiteHacker said:
Instead of there being fundamental steps of conductivity, conductivity is noted to be rational. (You can express it as a fraction of quantised values.)
As resistance due to the quantum hall effect, in two-dimensional systems at low temperature and strong magnetic field.

There is a way to generate a quantised resistance, but it does not mean that resistance IS always quantised as charge is.


Oh, and I found an error in your dimensional analysis:

Electric charge: e
Magnetic flux quantum: Φ = h/(2e)
Quantum hall effect constant: e^2/h

No, you don't get a length here. In more basic units, conductivity is charge^2 time^3/(mass length^2).
 

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