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Feb2313 08:38 AM
ZapperZ

1 
30,439 
The combination of special relativity and quantum mechanics in a single framework makes our understanding of such...

Jan713 07:55 AM
andrien

3 
648 
I have never—and I really do mean never—seen an article in the mainstream press about quantum computing that didn't...

Jan713 07:05 AM
Zarqon

1 
523 
I have been reading:
...

Jan713 04:16 AM
Demystifier

1 
501 
hi pf, while reading photoelectric effect i found that one photon of light causes the emission of one electron? I...

Jan713 03:14 AM
tinytim

11 
988 
Hello,
I heard a scientist on the radio claiming that, if the universe is infinite, that all possible combinations...

Jan613 10:41 PM
SteveL27

15 
1,626 
Looking at the Standard model, I noticed that all the quarks and leptons have a spin of 1/2 and all of the gauge...

Jan613 05:59 PM
DiracPool

6 
982 
Beforehand, please excuse my ignorance in this field, as I am only beginning to delve into its astounding depths.
...

Jan613 10:29 AM
Polyrhythmic

10 
964 
Hey,
I have question on Helium with one electron in it's ground state orbital 1s and the other in the 2s orbital....

Jan613 12:53 AM
andrien

7 
778 
SMatrix is calculated in that the interaction at infinite past and future time is zero.Then how can we solve the...

Jan613 12:21 AM
andrien

17 
1,358 
in the experiement does the electron/photon always split and physically go through both slits or is this just an...

Jan513 08:27 PM
dlgoff

8 
975 
Having trouble wrapping my head around holography after watching/reading a ton of stuff on the topic. What I think I...

Jan513 07:43 PM
Simon Bridge

17 
1,588 
Hello.
I have a tiny question that has confused me.
Currently I'm reading about potential wells, harmonic...

Jan513 06:15 PM
DiracPool

3 
754 
http://www.livescience.com/18567wac...principle.html
are these once again bold claims?
they are saying the...

Jan513 05:55 PM
dlgoff

13 
1,204 
Hi,
I'm quite new to quantum mechanics, learning about it in my free time in a lifelong learning fashion :) I've...

Jan513 03:15 PM
jk22

1 
535 
If a particle has the probability of being in two places at once, then is it possible to use a particle accelerator to...

Jan513 06:27 AM
Physics4

42 
3,618 
I'm trying to understand how optical circuits behave. In particular, if they can interfere "across time". Consider...

Jan513 03:21 AM
Strilanc

8 
553 
One may have noticed from my recent posts that my head has been spinning lately, or more specifically, I’ve had spin...

Jan513 12:21 AM
andrien

7 
860 
At first let's take a look at the eigenvalue problem for the momentum operator in xrepresentation.
i \hbar...

Jan413 10:34 PM
strangerep

11 
1,049 
It had been asked before on physics forums but the given answers didn't convince me .

Jan413 05:22 PM
strangerep

22 
2,006 
It is not hard to show that for QM what takes the wave function from t>t+Δt is the exponential of the hamiltonian....

Jan413 03:20 PM
jfy4

3 
677 
does not occur because the probabilities are of the magnitude of exp, give or take a few decimal places, correct? i.e....

Jan413 01:27 PM
I2004

25 
3,901 
I'm sorry if this has already been completed or already discussed. If so, just link me to answer the question,...

Jan413 07:37 AM
Nugatory

1 
661 
The expansion theorem in quantum mechanics states that a general state of a system can be represented by a unique...

Jan413 04:50 AM
Chain

4 
534 
Hello, is it possible to reproduce the double slit experiment at home with some easily obtainable equipment?
I was...

Jan313 04:11 PM
Pitullie Paul

32 
27,571 
I’ve heard in several places that we must view the spin of subatomic particles not as we would that of a classical...

Jan313 04:09 PM
DiracPool

24 
3,851 
Morrobay suggested we split off this discussion from another thread.
I will post my summary of the EPR definition a...

Jan313 03:44 PM
berkeman

22 
1,682 
Hi there,
I've a few (probably very basic) questions about photonelectron (lightmatter) interactions. Here we go:...

Jan313 10:46 AM
110010

8 
908 
Hi,
Let's say I have a creation operator that creates a photon in some spatial mode. It has a spectral distribution...

Jan313 09:15 AM
McLaren Rulez

2 
445 
I'm a bit confused by something Peskin & Schroeder say about differential cross sections. In my printing, this is on...

Jan313 09:04 AM
alemsalem

4 
805 
I tried looking it up but I can't understand it. Is the graviton some kind of theoretical particle that gives of...

Jan313 08:08 AM
Naty1

22 
1,803 
Hi. First of all English is not my native language and i am a layperson, so I hope i can explain my self.
It is...

Jan313 02:40 AM
bhobba

5 
862 
Have you recently came across and remember titles of papers about real experiments concerning the famous double slit...

Jan213 08:49 PM
Cthugha

3 
883 
Hi,
I am trying to write down the propagator for a scalar field theory, but I want to try and get it in the...

Jan213 11:37 AM
xepma

5 
727 
For Wigner transforming the function of operators x and p : (xp+px)/2 we need to evaluate something like:
g(x,p) =...

Jan213 09:49 AM
aim1732

6 
782 
Consider two hermitian operators A and B.
Imagine a system is in state \psi\rangle ,then we have:
\langle...

Jan213 04:17 AM
dextercioby

49 
4,158 
Hey,
I have the following question on Hermitian operators
http://i.imgur.com/yDaz3.png
Initially I thought...

Jan213 04:05 AM
aim1732

9 
1,022 
Hi all,
One more question about the Unruh effect, i.e., that an accelerating observer will see a vacuum filled with...

Jan113 10:29 PM
asimov42

10 
1,195 
I am just an interested high school physics student so I don't really know much about the subject, but I am given to...

Jan113 05:35 PM
DiracPool

18 
2,501 
Consider a nonrelativistic electron in one dimension, with the potential
V(x)=\left\{
\begin{matrix}
\infty,...

Jan113 04:54 PM
Vanadium 50

10 
1,303 
This has been a contradiction in my brain for some time.
If I want to rotate one nuclei (spin 1/2), with say an...

Jan113 02:40 PM
haibane90

5 
897 