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Results tagged with quantum-mechanics
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user 171
Quantum mechanics describes the microscopic properties of nature in a regime where classical mechanics no longer applies. It explains phenomena such as the wave-particle duality, quantization of energy, and the uncertainty principle and is generally used in single-body systems. Use the quantum-field-theory tag for the theory of many-body quantum-mechanical systems.
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Randomness, Chaos, Quantum mechanical probability functions
You should check out these two papers:
"The Nature of Randomness: Part 1 -
Knowable or Unknowable?" 2008,
Journal of Risk Finance, 9, 1.
"The Nature of Randomness: Part 2 -
Cognitive Constraints," 2 …
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3
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Why did decoherence start in the first place?
We learn that the quantum wave function $\Psi$ collapses when it interacts with a classic object (measurement).
My question is: Why are there classic objects after all, how did it all start? In a qu …
- 3,771
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1
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Does this new quantum experiment rule out the possibility of a many-worlds interpretation?
This brand new published result (nature):
Experimental non-classicality of an indivisible quantum system by
Radek Lapkiewicz, Peizhe Li, Christoph Schaeff, Nathan K. Langford, Sven Rame …
- 3,771
2
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Very simple example of the way the Fourier transform is used in quantum mechanics?
In quantum mechanics, the momentum and position wave functions are Fourier transform pairs, to within a factor of Planck's constant. With this constant properly taken into account, the inequality abov …
- 3,771
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Does this Zeilinger group result provide experimental proof of backward-in-time causation?
A pretty good non-technical summary of the experiment and its possible interpretations is given by Chad Orzel here:
Entangled In the Past: “Experimental delayed-choice entanglement swapping”
- 3,771
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What is space according to quantum mechanics?
We have a pretty good idea what space is in general relativity, yet the strange fact of non-locality in quantum mechanics tells a different story.
Interestingly enough this non-locality doesn't seem …
- 3,771
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How does non-commutativity lead to uncertainty?
A nice account is given in Päs: The One:
Checking this idea with his matrix formalism, Heisenberg discovered
that it, in fact, wouldn’t allow a simultaneous accurate determination
of both position an …
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How does non-commutativity lead to uncertainty?
I read that the non-commutativity of the quantum operators leads to the uncertainty principle.
What I don't understand is how both things hang together. Is it that when you measure one thing first and …
- 3,771