List questions from quantum-mechanics

Published on 09 Dec 2015 - 18:56

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Integral of an operator

Published on 11 Dec 2015 - 0:42

337

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2D linear schrodinger equation

Published on 11 Dec 2015 - 4:21

69

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Partial derivative of a complex number

Published on 11 Dec 2015 - 8:30

960

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Help With the Proof of the Spectral Decomposition (Quantum Mechanics)

Published on 20 Dec 2015 - 2:14

128

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Prove $\exp{i\frac{\pi}{2}(-1+\sigma_{i})}=\sigma_{i}$

Published on 07 Mar 2026 - 10:17

262

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Prove: Expectation value is the weighted average

Published on 31 Dec 2015 - 19:47

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Solving $\ddot{x} + \omega^2x = 0$: Classical Path for a Simple Harmonic Oscillator

Published on 02 Jan 2016 - 21:22

2.6k

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Prove: the density operator of a pure state has exactly one non-zero eigenvalue equal to unity

Published on 04 Jan 2016 - 17:38

91

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Why is $\sum{\frac{1}{(j/2)!}(\xi)^j}\approx\sum{\frac{1}{j!}(\xi)^{2j}}$?

Published on 06 Jan 2016 - 19:58

931

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How to prove the Weyl identity?

Published on 08 Jan 2016 - 1:57

76

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Solution to the Schrödinger equation

Published on 09 Jan 2016 - 15:30

24

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Potential such that the time-independent Schroedinger equation has an explicit solution

Published on 11 Jan 2016 - 12:33

463

Views

Proving Ehrenfest Theorem $m\frac{d}{dt}\langle\vec{\hat{x}}\rangle\;=\; \langle\vec{\hat{p}}\rangle$

Published on 12 Jan 2016 - 16:29

224

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What kind of geometric object is the Pauli spin matrix vector $\vec{\sigma}$?

Published on 16 Jan 2016 - 20:56

List Question

Why can lorentz transformation be expressed like this

Integral of an operator

2D linear schrodinger equation

Partial derivative of a complex number

Help With the Proof of the Spectral Decomposition (Quantum Mechanics)

Prove $\exp{i\frac{\pi}{2}(-1+\sigma_{i})}=\sigma_{i}$

Prove: Expectation value is the weighted average

Solving $\ddot{x} + \omega^2x = 0$: Classical Path for a Simple Harmonic Oscillator

Prove: the density operator of a pure state has exactly one non-zero eigenvalue equal to unity

Why is $\sum{\frac{1}{(j/2)!}(\xi)^j}\approx\sum{\frac{1}{j!}(\xi)^{2j}}$?

How to prove the Weyl identity?

Solution to the Schrödinger equation

Potential such that the time-independent Schroedinger equation has an explicit solution

Proving Ehrenfest Theorem $m\frac{d}{dt}\langle\vec{\hat{x}}\rangle\;=\; \langle\vec{\hat{p}}\rangle$

What kind of geometric object is the Pauli spin matrix vector $\vec{\sigma}$?

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