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Feb2313 08:38 AM
ZapperZ

1 
36,468 
I am familiar with the dual slit experiment up to the point where measuring at one slit made the interference pattern...

Dec2510 10:01 AM
vish_al210

3 
855 
Would it be reasonble to estimate the force delivered by a laser in the following way?
I was thinking of...

Dec2510 06:03 AM
Doc Al

6 
2,552 
Dimensionless equation for quantum harmonic oscilator in the lowest energy state is:
d2u/dx2=(x21)u
u means...

Dec2410 04:42 PM
soothsayer

4 
927 
I have three question regarding the electronic wavefunction \Psi
Ques 1 What does value of wavefunction of any...

Dec2410 11:40 AM
vaibhavsharma

3 
3,685 
Hi folks, i've never taken a real quantum physics course, so this question miiight be really silly, but here it is:
...

Dec2410 08:04 AM
tom.stoer

7 
2,404 
Does quantum randomness or uncertainty tells us that we have free will?

Dec2310 11:36 AM
yoda jedi

4 
967 
Alright, so there's definitely a lot of SciFi hype about Entanglement. I'm sort of hoping the experts on the subject...

Dec2310 09:45 AM
MattRob

2 
1,776 
Hi. This has been destroying my mind all day.
Take, for example, a semiconductor laser with no internal photons...

Dec2310 04:35 AM
orenp

3 
2,500 
Can we ionize the helium atom at once? ie the two electrons simultaneously and not one after another. If yes, what is...

Dec2310 03:16 AM
Drakkith

2 
1,136 
Hi,
By analogy with scalar field case, Srednicki leads us to Z_0 (\eta)=\int \mathcal{D}\Psi \exp{\left} for a...

Dec2210 05:49 PM
LAHLH

5 
1,625 
hello,
how can we be sure that quantum physics (uncertainty,superposition) is not a consequence or directly related...

Dec2210 04:38 PM
ZapperZ

8 
1,047 
I think this is right, but could someone confirm (or deny) this for me?
While a particle like an electron  or a...

Dec2210 04:32 PM
tom.stoer

5 
859 
i am not exactly sure what happens when the temperature almost reaches absolute zero how things react to this drop and...

Dec2210 11:48 AM
genneth

9 
2,013 
I was hoping someone could explain, in terms I can understand, the movement of particles. Clearly I am not a...

Dec2110 01:09 PM
Maui

8 
4,537 
Why is it that the electrochemical potential at either the drain or the source of a transistor gets reduced, under the...

Dec2110 12:11 PM
thinktank1985

0 
1,253 
I am reading through 'An Introduction to QFT' by Peskin & Schroeder and I am struggling to follow one of the...

Dec2110 11:31 AM
naima

1 
698 
Not really sure how to go about this. Our lecture said "it can be shown" but didn't go into any detail as apparently...

Dec2110 08:24 AM
arkajad

2 
2,574 
Dear users,
I am dealing with the proof of the Hellman Feynmantheorem for timedependent wavefunctions given by...

Dec2110 07:47 AM
naima

3 
1,976 
I was reading Merzbacher and it is written that it is a fundamental mathematical assumption. I was doubting if it is...

Dec2110 05:53 AM
Pythagorean

3 
2,251 
It seems obvious in path integral, the paths include some nondifferentiable path (some even discontinuous, I think),...

Dec2010 04:32 PM
kof9595995

9 
3,018 
Phys. Scr. 82 065002, 2010.
Is quantum mechanics nonlocal?
A factual inconsistency of the nonlocality theory is...

Dec2010 01:23 PM
DrChinese

3 
2,517 
When I read the book of quantum mechanics of Griffiths, he said that the wave function must go to zero faster than...

Dec2010 10:12 AM
unusualname

2 
1,590 
All the scientific documents explaining QE that I have read always refer to the entanglement of photons, and yet some...

Dec2010 08:17 AM
nuiluidwde

2 
1,471 
How do you do a Bell measurement on a state that doesn't have a power of 2 number of qubits? I've got GHZ states like...

Dec2010 08:02 AM
DodongoBongo

0 
2,285 
Good day All,
I've done a bit of reading on quantum entanglement and it seems that I'm lacking some basic knowledge...

Dec2010 05:10 AM
TungstenX

0 
897 
Hii,
I was wondering whether there is any correlation between the energy eigenvalues of a single atom (say He) with...

Dec2010 04:52 AM
cgk

1 
1,295 
Say for example we consider Helium.
It has 2 neutrons and 2 protons. Based on this, and using Schodingers equation...

Dec2010 04:39 AM
cgk

7 
2,431 
Hi,
Could you describe the "before the measurement" mechanism in de broglie bohm theory? Is there a real collapse...

Dec2010 03:22 AM
Demystifier

16 
2,911 
Betrand theorem in classical mechanics states that only harmonic & 1/r potential will give closed and stable orbit....

Dec2010 12:03 AM
kof9595995

11 
1,168 
I read an article where it says that the speed of light is broken by sending information faster than light and it also...

Dec1910 10:49 PM
Dynamic Sauce

0 
720 
HI everybody.
I'm here with a question that I would like to discuss with you.
As you all probably know better than I...

Dec1910 09:18 PM
lugita15

1 
1,329 
When taking a course in Modern Physics, after doing quite a lot of thinking, I finally asked the lecturer: when the...

Dec1910 05:03 PM
Edgardo

3 
2,132 
Hi, I'm trying to figure out the solution for the ground state of the hydrogenatom, however it is not going well.
As...

Dec1910 01:54 PM
aaaa202

4 
832 
E\Psi(\vec{r_1},\vec{r_2})=(h^2/2m*\nabla^2+U(\vec{r_1})+U(\vec{r_2})+U_{ee}...

Dec1910 01:42 PM
thinktank1985

0 
723 
Hi,
I was wondering why the oscillation of a field would cause particle creation (This seems to be the main point...

Dec1910 09:03 AM
QuantumCosmo

0 
794 
does anyone actually know what happens when something reaches the event horizon?

Dec1810 01:32 PM
tom.stoer

1 
712 
all right so alice has one atom of the entangled triplet and bob the other two atoms
bob is gonna always measure...

Dec1810 07:33 AM
antonio glez

13 
1,058 
Please teach me this:
It seem that there exist only two basic operators(calculations) that are addition and...

Dec1710 08:48 PM
ndung200790

0 
549 
Now, I know this has been discussed a few times, but I still don't get the proof of how p is a hermitian operator, so...

Dec1710 08:44 PM
Fredrik

4 
1,045 
New J. Phys. 12 123007, 2010.
Violation of Leggett inequalities in orbital angular momentum subspaces.
We...

Dec1710 03:36 PM
yoda jedi

0 
1,276 