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Feb2313 08:38 AM
ZapperZ

1 
36,192 
So in the infinite well Energy is proportional to 1/L^2, so i'm assuming in the finite well there is some sort of...

Mar3014 02:47 PM
The_Duck

1 
286 
My textbook says the ground state energy of the QSHO is given by 1/2*h_bar*w and that this is the minimum energy...

Apr514 01:37 PM
WannabeNewton

1 
221 
So my professor said that the Kinetic energy of the particle in a 3D infinite well is dependent on position where in a...

Apr1714 12:18 PM
Bill_K

2 
342 
I'm doing a research paper on the deutsch problem in QC. My google inquiries have turned up numerous papers on...

Mar206 03:17 AM
Tez

3 
3,397 
Did you guys get this link yet?
http://www.news.cornell.edu/stories/Sept06/schwab.quantum.html
Simply amazing.

Oct106 06:58 PM
Rade

5 
1,179 
A friend of mine wrote a paper on entanglement, measurement, and simultaneity.
the professor provided an...

Mar2907 12:25 AM
George Jones

5 
1,376 
Is this right? To calculate a scattering amplitude for a certain scattering event, you take the term in the wick's...

Nov2709 12:12 AM
pudilz

0 
1,223 
I have not had any luck in finding out how much is known about the actual positions of quarks in protons and neutrons....

May210 01:46 AM
ansgar

1 
869 
Would the following explanations suffice to explain why the photoelectric effect shows the particulate nature of...

Nov1212 09:53 PM
Punch

2 
664 
hi
is there any way we can find \Psi(x,t) for a given \psi(x,0) ?????
i got stuck with schrodinger...

Feb1210 02:13 PM
puneet.988

5 
894 
Hi,
I need to calculate the energy levels for a generalised potential, which forms a double well, on Matlab as part...

Nov608 01:48 PM
puneet203

0 
3,102 
Brian Greene describe an experiment in his book "The fabric of the cosmos" pretending to illustrate the Bell test...

Apr1012 04:38 AM
Timbo

17 
3,308 
I have seen similar posts, but I haven't seen what seems to be a clear and direct answer.
Why do only a certain...

Aug214 06:58 AM
bhobba

9 
328 
I have trouble understanding the concept of imaginary time. As I understand it (by reading other online sources),...

Aug1409 11:57 AM
putongren

0 
1,187 
Hello,
I would like to reopen a topic raised by Si in 2003.
I agree with Si that Weinberg's vol.1 is a...

Oct1209 07:45 AM
pverlain

0 
500 
Let's have a theory involving Dirac field \psi. This theory is decribed by some Lagrangian density...

Apr2808 07:02 AM
jostpuur

11 
2,057 
Hi,
Just wondering, can we prove that there is a maximal complete set of commuting observable?

Mar111 10:03 AM
A. Neumaier

3 
835 
My own question, carried to a new thread as not to derail another:

Aug2207 03:51 PM
genneth

1 
1,007 
In lecture today, we were going through Griffith's QM, Chapter 7, The Variational Principle.
The particular case...

Feb2308 05:54 AM
Pythagorean

0 
1,195 
I've gained interest in the LHC being built at CERN, which has led me to the LHCb experiments, which pertain to...

Mar808 08:55 AM
ZapperZ

2 
1,150 
Is Spacetime Smooth?
Smooth: infinitely differentiable
If there were a limit to the differentiability of...

Aug311 11:37 AM
d9090

99 
14,775 
I've been told recently that the vacuum permittivity, given a sufficiently strong electric field, is not a constant,...

Oct1309 09:30 AM
Bob_for_short

6 
1,665 
I'm assuming the standard reductionist viewpoint: that chemistry is simplified quantum physics.
Of the four...

Dec2609 08:29 AM
sas3

6 
5,335 
My QM is undergrad level and I don't keep up on recent breakthroughs. I'm curious what the status is on space...

Mar2011 05:06 AM
tom.stoer

1 
782 
I'm learning about Schrodinger's equation in my general chem class right now, so obviously I'm doing a little...

Oct2909 04:33 AM
Bob_for_short

2 
1,387 
This may be a basic question; I'm not sure because I'm just getting into quantum theory. As I understand it, the...

Oct3109 04:31 PM
Bob S

8 
886 
I'm learning how to solve the Schrodinger wave equation and I know that the solutions are of the general form:
...

Nov209 09:24 AM
pzona

2 
1,130 
Quick question about how Schrodinger constructed the momentum operator. I understand that \widehat{H} in the wave...

Nov2309 05:04 AM
physicsworks

3 
708 
The rms EM field within a cavity resonator, excited in a single resonant mode by a current probe of fixed rms...

Nov3011 07:46 AM
Qreeus

6 
2,987 
I'd like some informed opinion on the following scenario, which in a certain article forms the basis of a...

Jan2711 12:48 PM
Qreeus

2 
859 
more... susceptible to ionization?
Basically so that less energy is required for ionization.

Mar2508 01:50 PM
Qaiphyx

6 
1,293 
Hi!
I am having some difficulty in finding a definition about some kind of reverse operation (integration) of a...

Feb2312 08:16 PM
strangerep

9 
1,520 
Ok, if a particle is a wave and can diffract (e.g. through graphite sheet), I mean does the particle split into two or...

Nov709 12:27 PM
J12345

4 
1,522 
Using the meager physics knowledge I've scrapped together over my 19 year life span I've arrived at the following...

Jul809 10:39 AM
Qbit42

2 
747 
I don't understand how in quantum mechanics we have discrete and exact energy states for electron orbits but then at...

Oct109 07:08 AM
f95toli

3 
1,085 
To solve the the blackbody radiation Planck had to solve the partition function or average energy for a harmonic...

Nov2910 03:16 PM
granpa

21 
5,266 
So for the phase velocity of a massive particle we have
Vph = Vg/2 for nonrelativistic case
Vph = c^2/Vg for...

Mar713 05:15 AM
Bill_K

1 
630 
Hello,
Can someone explain to me in a conceptual manner why when Special Relativity and QM are combined (ie Dirac)...

Nov2910 10:12 AM
PhilDSP

8 
1,323 
I was talking to my professor about what constitutes as a measurement and the topic of the SternGerlach experiment...

Dec110 02:43 AM
zonde

8 
1,206 
Hi,
I have a question about a statement I've seen in many a Quantum Field Theory book (e.g. Zee). They say that the...

Apr1405 10:53 AM
dextercioby

2 
4,634 