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Results tagged with quantum-mechanics
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user 3460
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.
5
votes
Simple Quantum Mechanics question about the Free particle, (part2)
I would normally just add this as a comment, but I still can not comment.
I would say the author is just saying that because the arguments are effectively the same, and the modulus of each number is …
- 809
2
votes
1
answer
242
views
Apparatus used to test violations of Bell's inequalities
I believe most people are familiar with Bell's Theorem. If I understand correctly, the violations of Bell's inequalities are possible due to the existance of entangled quantum states. Although popul …
- 809
7
votes
4
answers
2k
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Quantum Physics and the Law of Large Numbers
On page 1 of this recent paper by Bousso and Susskind we read.
This question is not about philosophy.
Without a precise form of decoherence,
one cannot claim that anything really
"happened", …
- 809
1
vote
Should I begin to study quantum mechanics or wait until I have a stronger base on easier top...
As others have stated or suggested, there is no right answer, although I get the notion that some feel there is a proper order to these things, and being a layman I am not qualified to judge what is p …
3
votes
1
answer
317
views
Are black hole states completely mixed?
A completely mixed state is a statistical mixture with no interference terms, and (QMD, McMahon, pg 229):
$$\rho = \dfrac{1}{n}I$$
$$Tr(\rho^2) = \dfrac{1}{n}$$
Are black hole quantum states compl …
- 809