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Results tagged with quantum-mechanics
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user 100237
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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Question about the physics of nuclear interactions
I have been reading this paper on nuclear interactions data. It shows plenty of plots of nuclear reaction data as a function of energy (actually, energy scaled by nuclear mass). All these graphs seem …
- 1,240
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Prove that in Bell's inequality $\langle{\Psi}|\left(\bf{\sigma}\cdot\bf{a}\right)\left(\bf{... [closed]
I am trying to understand how the correlation function in John Bell's paper on EPR is derived for a spin singlet state $|{\Psi}\rangle$. This is defined to be
$$
\langle{\Psi}|\left(\mathbf{\sigma}\cd …
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Derivation of position operator in QM
In QM you have a general postulate, that requires physical observables (momentum, angular momentum, coordinates) to be represented by Hermitian operators. Actually, in QM you have different bases as w …
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