Indeterminacy of wave function

In summary, the conversation discusses the indeterminacy of quantum mechanics and its possible origins. The laws of quantum mechanics are deterministic, but indeterministic effects arise in some interpretations during measurements. This is considered to be a fundamental property of the universe and cannot be avoided. The conversation also considers the possibility that reality may be either indeterminate or determinate, but both hypotheses are neither provable nor refutable. The conversation questions why the idea of determinate reality is not given more consideration.
  • #1
klw289
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Does the indeterminacy of quantum mechanics arise from the lack of knowledge of the time-evolution of the wave function between measurements or do it have another origin
 
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  • #2
The laws of quantum mechanics are fully deterministic, and we know them very well.
Indeterministic effects arise in some interpretations in measurements, and cannot be avoided. It is not our lack of knowledge of the initial state, its propagation, or lack of precision of the experiments, it is a fundamental property of the universe that you cannot predict the outcome.
 
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  • #3
You say "indeterminacy ... is a fundamental property of the universe". Due to the uncertainty inherent in quantum measurements, however, subatomic reality will always appear to us to be indeterminate, even if it isn't really. So there are two possibilities, both neither provable nor refutable, and hence equally valid. Namely that reality is a) indeterminate; b) determinate. Why is the second never considered?
 
  • #4
jeremyfiennes said:
So there are two possibilities, both neither provable nor refutable, and hence equally valid. Namely that reality is a) indeterminate; b) determinate. Why is the second never considered?

It is considered, in some interpretations. The entire question doesn't get much air time (and there are people who will say that what little it does get is still too much) for exactly the reason that you have pointed out: It's neither provable nor refutable.
 
  • #5
But the "inherently indeterminate" hypothesis is likewise neither provable nor refutable. That is my point. One hypothesis is declared to be the case, without proof. And the other is ignored. What did it do wrong?
 
  • #6
jeremyfiennes said:
But the "inherently indeterminate" hypothesis is likewise neither provable nor refutable.
It is, see the Bell inequality.
There is a lot of freedom where you place the description of "indeterminate", but it has to be somewhere.
 

What is the concept of indeterminacy of wave function?

The concept of indeterminacy of wave function, also known as the uncertainty principle, states that it is impossible to know both the exact position and momentum of a subatomic particle at the same time. This is due to the wave-particle duality of quantum mechanics, which suggests that particles can act as both a wave and a particle.

How does the indeterminacy of wave function affect our understanding of the physical world?

The indeterminacy of wave function challenges our traditional understanding of the physical world, which is based on classical mechanics. It suggests that at the subatomic level, things behave in a probabilistic manner and cannot be predicted with certainty. This has significant implications for our understanding of causality and determinism.

What is the Heisenberg uncertainty principle?

The Heisenberg uncertainty principle is a mathematical representation of the indeterminacy of wave function. It states that the product of the uncertainties in position and momentum of a particle must be greater than or equal to a certain value, known as Planck's constant. This principle applies to all subatomic particles, including electrons, photons, and atoms.

How does the indeterminacy of wave function impact the development of technology?

The indeterminacy of wave function has had a significant impact on the development of technology, particularly in the field of quantum computing. The probabilistic nature of subatomic particles means that they can exist in multiple states simultaneously, allowing for more efficient and powerful computing. However, it also poses challenges in controlling and measuring these particles, which is crucial for the success of quantum technology.

Is the indeterminacy of wave function a limitation of our knowledge or a fundamental aspect of nature?

This is a highly debated question in the scientific community. Some argue that the indeterminacy of wave function is a limitation of our current knowledge and that there may be underlying hidden variables that can explain the probabilistic behavior of particles. Others believe that it is a fundamental aspect of nature and that we must accept that there are inherent uncertainties in the universe. Further research and experimentation are needed to fully understand the nature of the indeterminacy of wave function.

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