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Quantum Physics

- Mathematical description of the motion and interaction of subatomic particles. Quantum Mechanics & Field Theory
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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Feb23-13 08:38 AM
ZapperZ
1 36,205
I'm trying to solve this question for an assignment, and wanted to know if i am on the right route. An electron with...
Oct23-04 06:18 PM
mtrevor
0 1,385
Reading about the double slit experiment in Six Easy Pieces I came across something I had questions about, which is...
Aug4-05 11:06 PM
mmwave
8 1,385
I was curious as to the form of the hamiltonian, whose energy eigenstate in the position basis is a gaussian...
Jun6-07 10:45 AM
StatMechGuy
2 1,385
Hello, I am a beginner on the sbject so please correct if I'm using some sloppy terminology. I'll try to be clear. ...
Jul20-11 08:45 AM
dextercioby
1 1,385
I've been reading about it various places online, but I can't seem to find a straight answer. Is information lost...
Sep13-11 06:29 AM
Demystifier
11 1,385
hello there, i've read in several places the following: if you have a polyene with J double bonds, and taking into...
Feb26-12 07:04 AM
sweet springs
5 1,385
Hi PF I am reading this paper and this one. Zurek insists on the fact that pointer states emerge when the same...
Nov27-13 09:54 AM
atyy
23 1,385
I read some paragraphs from Michio Kaku's Hyperspace about Abdus Salam's illustration of symmetry breaking using a...
Jul7-04 05:58 PM
Tyger
2 1,384
We know the average energy of particle could be described by temperature. E=k*T. The energy is quantized. Its unit...
Jul20-07 09:44 AM
Meir Achuz
2 1,384
The presenter is Ross Rhodes here he explains an experiment performed: ...
Oct17-11 08:58 AM
xts
4 1,384
Casimir force increases when you put 2 plates closer and closer... But where is a limit? Obviously, Casimir...
Jan5-09 08:56 AM
Dmitry67
4 1,384
Can anyone tell me if this is the basic concept behind effective field theories: 1) You begin with your original...
Feb18-09 06:15 PM
RedX
2 1,384
Hi All - My name is Dan Sandberg and I am studying physical chemistry at the Univ. of Connecticut in the USA. I...
May24-10 12:36 PM
DanSandberg
8 1,384
free energy is often defined in canonical ensemble but can we define it for micro-canonical ensemble? why...
Nov23-10 12:02 PM
wdlang
0 1,384
I'm interested in the history of the discovery of the neutrino suggested in 1930 by Pauli and I read that the first...
Dec3-10 04:06 PM
Naty1
3 1,384
I originally posted this in the Science Book and discussion forum but received no help. Am posting it here, hoping...
Jun18-11 10:07 AM
WiFO215
4 1,384
A layman with an interest in quantum mechanics here. Just want to check I understand something... Is the...
Jun23-11 09:47 AM
mike.rablins
2 1,384
Hi I am just doing an undergraduate degree in physics and currently studying a course in the foundations of QM. The...
May27-05 06:34 PM
James Jackson
6 1,383
So there's something I don't quite understand. The density in the KG equation stands for charge density. Here are...
Feb11-06 07:18 AM
Meir Achuz
1 1,383
Suppose you have a particle which is not in a momentum eigenstate. You then measure the momentum (say, in the...
May15-06 02:18 PM
DrChinese
6 1,383
As a beginner in QM I have a question that I could not find answered in my books. Two particles evolve happily...
Oct13-08 09:26 PM
ice109
15 1,383
if I could write down an operator that depended on the metric but always had the same eigenvalues regardless of the...
Nov29-08 04:18 PM
CPL.Luke
3 1,383
according to the paper by Chuang SL, 1997, Semicond. Sci. Technol. 12, 252 (1997). ... you can see in page 258, the...
Aug26-10 07:04 PM
sweety0423
0 1,383
I read http://physicsworld.com/cws/article/indepth/44015 It is a good principle to get feeling of quantum physics...
Oct20-10 02:49 PM
exponent137
0 1,383
I know this has been asked before but Im still not getting it. Does anyone know why a classical deterministic world...
Jan18-14 07:14 AM
tom.stoer
26 1,383
Hello, I would like to know how to calculate the broadening of the spectral lines caused by the Doppler effect for...
Jun6-09 01:48 PM
EliotHijano
0 1,382
:confused: HI, is wave behaviour on a two dimensional field or in a multidimensional field in space?? i am...
Jul9-14 04:17 PM
mfb
7 1,382
A young student asks me "why mr. Max Planck could find out the planck constant. How come he could find such a small...
Oct17-09 04:12 AM
pixel01
6 1,381
Clearly integral particle number is an experimental fact. But within quantum theory, does integral particle number...
May31-10 02:39 AM
sheaf
9 1,381
Hello everyone, I'm starting to study this subject and I'd like to know if anyone else has some experience to share,...
Sep9-07 08:02 AM
diegzumillo
0 1,380
In Hidrogen atom, why we choose the center of mass coordinate which is on the same direction with relative coordinate?
Mar6-08 09:29 AM
malawi_glenn
1 1,380
Hallo, I would like to know why physicists are always seeking for irreducible representation of a given group. I...
Aug12-08 08:34 PM
Fredrik
10 1,380
Hi there! I have some problems understanding the connection between high momentum transfer and short distance...
Dec1-08 10:48 AM
ledamage
0 1,380
Since my ability to respond to articles was messed up by someone and I have been unable to get any help straightening...
Jan24-11 10:00 PM
DarioC
10 1,380
Please teach me this: Why discontinue(quantum) characteristic ultimately relates with probability characteristic in...
Mar11-11 09:58 AM
Demystifier
7 1,380
I don't get why for hydrogenic atoms the 2s and 2p orbitals have the same energy. i do get it mathematically, but im...
Feb14-12 04:03 PM
Vanadium 50
6 1,380
Hello, I was just taking a shower when this question came upon my mind, what would happen if all the electrons stopped...
May5-06 01:13 PM
ZapperZ
4 1,379
Which QM interpretation (Bohm, Copenhagen, MWI) best supports the resolution of Hardy's Paradox?
Jul27-09 05:35 AM
Demystifier
8 1,379
What is the relativitic correction to the e^2/r coulomb law without spin between two electrons.second order is enough.
May17-11 03:32 PM
qsa
11 1,379
Hello everyone! I want to study QFT and I want to know all of the required mathematics for it. I know most of...
Dec9-11 11:47 AM
torquil
4 1,379

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