My Thoughts on Quantum Uncertainty

In summary, the high school student believes that quantum mechanics could be an approximation to a different theory (sort of like how Newtonian mechanics are an approximation of Einsteinian, i.e. relativistic, mechanics). He also suggests that something has to be happening in the extra dimensions for quantum mechanics to exist. He does not know if string theory leads to quantum mechanics as we know it or not.
  • #1
tycon69
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0
So I am just a simple high school student whom, while reading Elegant Universe, came up with an idea that would answer why the quantum world is so unusual. I am not well educated in quantum mechanics or the such, so please don't be too brutal while shooting down my thoughts, lol. So, while I was reading about extra dimensions curled up microscopically, i came across an idea, and threw the book down to elaborate on this idea. What if these extra dimensions , while too small to effect our macroscopic world, alter the quantum world just slightly in some cases to cause quantum uncertainty. Something only noticeable in this tiny dimension could be affecting the other dimensions or the extra dimension it's self could alter the 3 dimensional particles. These are just my uneducated amateur thoughts, so please, if they are drastically misdirected, direct them in the correct order.
 
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  • #2
Quantum Mechanics could very well be an approximation to a different theory (sort of like how Newtonian mechanics are an approximation of Einsteinian, i.e. relativistic, mechanics).

I haven't learned anything about extra dimensions and so forth, and I doubt I ever will in any class I am required to take, so I can't help in that regard, though.

Although, it's not enough for there to be extra dimensions. Something has to be happening in those extra dimensions.

For example, if you have a magnetic field and a charged particle goes through it, it ends up going in a circular path. If you only saw 2 dimensions, you'd be like "WTF?", but since we know there are 3 and the magnetic field goes in that 3rd dimension, we know what's happening.

So there would need to be some sort of mechanism proposed to perturb the particles like that. And then you'd have to figure out how to test that vs. just saying their state is undetermined.
 
  • #3
I'm afraid I don't know anything about string theory beyond what's in the elegant universe and the fabric of the cosmos (2years to go all being well before I can take courses in that :wink:)... but I do know a little more about quantum mechanics. I'm assuming that by "uncertainty" you're referring to Heisenberg's uncertainty principle. This states that certain pairs of variables cannot both be known with abitrary accuracy. Such variables are known as cannonically conjugate variables- the definition of which involves maths you haven't done yet, but don't worry about it. The HUP is an inevitable consequence of standard QM, and you can derive it using either wave mechanics or the original matrix formulation.
Now for the bit I don't understand :biggrin: In string theory, the answer to poop-loops' criterion that something must "happen" in the extra dimensions is that the fundamental constituents of matter vibrate through that many degrees of freedom. What I don't know is whether or not this leads to quantum mechanics as we know it. If it does, then it is responsible for uncertainty; if, however, QM and GR dictate more precisely how these vibrating systems behave, then uncertainty isn't really anything to do with the extra dimensions at all. Hopefully someone on here can advise us on which of those is nearer the mark!
 

1. What is quantum uncertainty?

Quantum uncertainty is a fundamental principle in quantum mechanics that states that the position and momentum of a particle cannot be known simultaneously with complete accuracy. This means that there will always be some level of uncertainty in the measurement of these properties.

2. How does quantum uncertainty affect the world around us?

Quantum uncertainty plays a role in many phenomena in the world around us, such as the behavior of electrons in atoms, the stability of chemical bonds, and the functioning of electronic devices. It also has implications for the behavior of larger objects, such as the movement of planets and stars.

3. Can we overcome quantum uncertainty?

No, quantum uncertainty is a fundamental law of nature and cannot be overcome. However, scientists have developed mathematical models and theories to describe and predict the behavior of particles and systems that take into account this uncertainty.

4. What is the Heisenberg uncertainty principle?

The Heisenberg uncertainty principle is a specific form of quantum uncertainty that states that the more precisely we know the position of a particle, the less accurately we can know its momentum, and vice versa. It was first proposed by physicist Werner Heisenberg in 1927.

5. How does quantum uncertainty relate to Schrödinger's cat?

Schrödinger's cat is a thought experiment that illustrates the concept of quantum superposition and the role of the observer in quantum systems. It does not directly relate to quantum uncertainty, but it does highlight the strange and counterintuitive nature of quantum mechanics.

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