Did de Broglie err in his hypothesis?

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    De broglie
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Discussion Overview

The discussion revolves around the validity of de Broglie's hypothesis regarding wave-particle duality and its implications in quantum mechanics. Participants explore the historical context of de Broglie's ideas, their evolution, and the current understanding of quantum theory, particularly in relation to the double-slit experiment and the uncertainty principle.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants suggest that de Broglie's wave-particle duality is a simplification and not an accurate representation of particles like electrons, which may be better understood as vibrations in a field.
  • One participant asserts that de Broglie's ideas were incorrect and were superseded by Dirac's transformation theory, indicating a shift in understanding quantum mechanics.
  • Another participant emphasizes the limitations of wave-particle duality, proposing that concepts like the uncertainty principle and superposition provide a more accurate framework for understanding quantum phenomena.
  • There is a mention of the potential confusion caused by introductory texts on quantum mechanics, suggesting that they may mislead beginners about fundamental concepts.

Areas of Agreement / Disagreement

Participants express differing views on the validity of de Broglie's hypothesis, with some arguing against it and others defending the need for a nuanced understanding of wave-particle duality. The discussion remains unresolved, with multiple competing perspectives presented.

Contextual Notes

Participants highlight the potential for misunderstanding due to simplified analogies in quantum mechanics and the challenges posed by introductory texts. There is also an indication that some foundational assumptions may not be universally accepted.

drl
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I'm a novice in this so to start with, I believe ...
[mentor's note: a personal theory posted in violation of the Physics Forums rules has been removed from this post]
 
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Hi drl

I would recommend reading more into the subject and maybe reading some introductory text around quantum field theory. When electrons are described as Wave and Particle, they are simplifications that describe wave-like and particle-like behaviours, depending on how you are measuring the electron in any particular experiment; they aren't descriptions of an electron actually being a wave or a particle. If you study particle physics more deeply, you'll probably think of electrons (and in fact all particles) and not particles at all, but vibrations in a field. Analogies are really helpful to get concepts across and aid understanding, but they are also really dangerous and you won't be the first or last person to fall into the trap of taking them literally!.

Hope this helps
Matt
 
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De Broglie was wrong. His ideas were overthrown when the correct quantum theory was developed with Dirac's transformation theory of 1926:
http://www.lajpe.org/may08/09_Carlos_Madrid.pdf

So forget all the guff you have read elsewhere which I can see from the above has really confused you.

Here is the explanation of the double slit using just QM:
http://arxiv.org/ftp/quant-ph/papers/0703/0703126.pdf

Once you have studied that we can chat about what's really going on. But basically its due to the uncertainty principle and principle of superposition - not the wave-particle duality which is an idea of limited applicability at best and maybe even downright wrong:
http://arxiv.org/abs/quant-ph/0609163

Thanks
Bill
 
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Love that last link Bill - have downloaded it to read tomorrow (well... realistically over a number of tomorrows!) Thanks.
 
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mgkii said:
Love that last link Bill - have downloaded it to read tomorrow (well... realistically over a number of tomorrows!)

Glad you like it.

Unfortunately we get a fair number of posters here confused by standard beginner treatments and you have to, sometimes, spend a bit of time explaining beginner texts have issues.

Thanks
Bill
 
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