Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with quantum-mechanics
Search options not deleted
user 364663
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.
0
votes
Do two electrons with the same $(n, \ell, m_\ell)$ but different $m_s$ have different wavefu...
Generally, not. It is true that when we consider the non-relativistic Hamiltonian with Coloumb interaction as the only interaction, there is no reference to spin, which indicates that all spin states …
- 3,132
1
vote
Accepted
Unpolarized spin 1/2 particles
I think it can not be derived. In quantum mechanics, we define the state of system as a unit vector $|\Psi\rangle$ in a Hilbert space. Observables are operators acting over this Hilbert space and both …
- 3,132
1
vote
(Qualitative) Quantum explanation of simple electric phenomenon
I'll answer your question with two analogous problems that I found in quantum mechanics and I'll try to mix both analogies to find the final answer
Analogy with electron scattering in impurities of th …
- 3,132
1
vote
Why the energy state n cannot equal 0?
If the quantum number $n=0$, it means that you have $\psi_n (x) =0$ and $E_n=0$, i.e., no particle inside the box, which doesn't fit the conditions of "a particle in a box".
In non-relativistic Quantu …
- 3,132
1
vote
Quantum Mechanics - particle interaction with a potential step
why is it possible without losing of generality?
You are solving the time independent Schrodinger equation, so it means that you are finding a set of solutions of the equation. Maybe not the most ge …
- 3,132
3
votes
Accepted
Are the eigenstates of an electron in the hydrogen atom coordinate dependent?
There is an elegant way to check how will be the new eigenfunctions of the changed Hamiltonian.
A change of origin is equivalent to a displacement of the system. Such transformation could be represent …
- 3,132
0
votes
Does a charged quantum harmonic oscillator in ground state perturb EM field?
I explored two different approach, semiclassical and quantum.
Semiclassical approach
We can consider the electric field radiated by an accelerated charge (as in The Feynman lectures Vol. I chapter 28. …
- 3,132
5
votes
Accepted
Why do we say $E=hf$ supports particle nature of light?
which supports the particle nature of light.
In fact, it doesn't. First, Planck's law is not only about this mathematical relation, but it includes a discretization process.
The density of modes per …
- 3,132
4
votes
1
answer
144
views
Is the Classical limit of Quantum theory the Newtonian Mechanics?
Recently I started to study Quantum Dissipative models like Caldeira-Leggett model and it occurs to me that this model provides a Quantum to Classical transition, but the Classical resultant system sa …
- 3,132
2
votes
How to prove this equation in quantum information theory?
If I understand it correctly, $\mathcal P_n$ forms a basis for Hermitian operators acting over the space of $n$ qubits. For example, if $n=1$, $\mathcal P_1 = \{\mathbb I,X,Y,Z\}$, and any state $\rho …
- 3,132
4
votes
Why is an unpolarized beam considered an incoherent mixture of equal weights?
The best way to understand polarization coherence is through the Poincare Sphere. When we deal with polarized light, the approach for perfect coherent beams is to describe polarization using the polar …
- 3,132
0
votes
Why do flux qubits have to be micrometer-sized?
I think one possible answer for this question, in addition to all good comments here present, could be found in the A. Caldeira book entitled An introduction to Macroscopic Quantum Phenomena and Quant …
- 3,132
0
votes
Travelling slit in double slit experiment
Let's try to calculate it. I'll consider a double slit experiment where the slits are a distance $d$ apart from each other in the $y$ axis, the wave moves in the $x$ direction with frequency $f$ and t …
- 3,132
1
vote
0
answers
26
views
About Aharonov-Bohm presentation in Aharonov and Rohrlich book
I'm currently reading the book Quantum Paradoxes: Quantum Theory for the Perplexed by Aharonov and Rohrlich and in chapter 4 they show the existence of AB effect. I'm already familiar with the explana …
- 3,132
2
votes
Einstein–Podolsky–Rosen (EPR) paradox and Everett interpretation
All interpretations of Quantum Mechanics explain the Einstein-Podolsky-Rosen paradox by its own way. If it is "satisfactory" or "easily explained" is quite personal, and I would say that it could not …
- 3,132