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Quantum Physics

- Mathematical description of the motion and interaction of subatomic particles. Quantum Mechanics & Field Theory
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Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Feb23-13 08:38 AM
ZapperZ
1 30,323
Quantum Jump - Is this wen an electron jumps to a higher energy level when absorbed energy and when it falls down and...
Jan19-04 09:40 PM
pallidin
6 1,134
What is the definiton of a high temperature superconductor otherwise known as Type II superconductors?
Jan20-04 09:11 AM
ZapperZ
1 1,045
What is the BCS theory?
Jan20-04 02:10 PM
roch
15 3,237
Hello, I have purchased, read, and understood the concepts in Feynman's book QED: The Strange Theory of Light and...
Jan22-04 01:41 PM
The_Markness
13 3,218
Can anyone give me a consice definition of what the Wigner-Eckert Theorem is? I've been reading about it but am...
Jan23-04 01:20 AM
Dr. Doak PHD
7 4,474
-I would like to know the differences between a renormalizable and Non-renormalizable theory..how is possible that one...
Jan23-04 01:14 PM
jeff
5 1,225
I have been asked to "find a solution to Ehrenfest's Theorem" (in this case for the expectation value of position, of...
Jan25-04 01:08 PM
majeka
4 5,074
...For abut two weeks i've searching the internet for a good online (i.e.free for download)course on the basis of...
Jan26-04 08:57 AM
vacuum
2 1,552
I am trying to get oriented in all those QM spaces. I would appreciate if somenone could point out some source of...
Jan27-04 06:03 AM
venkat
8 1,042
What is: Photonic drive Von Neymann nano probe EM propultion Planck energy propulsion I want to know more on...
Jan27-04 03:43 PM
Rick Sobie
7 1,982
hi! there is a good functional analysis book by Erwin Kreyzig...which has hilbert spaces and banach spaces and stuff!
Jan27-04 05:46 PM
lethe
2 1,192
Let me start by saying I most likly have no idea what I am doing. Also, that I realize the factor by which the moveing...
Jan28-04 10:11 AM
dlgoff
1 1,016
does anyone know? time = ?
Jan28-04 04:52 PM
lethe
14 1,256
I want to begin discussion with people that have a good understanding of Laser Technology and Computer Technology. ...
Jan29-04 04:41 PM
majestic99
0 1,064
We all know the speed of light has a absolute value in vacuum measured by all observers from various reference frames...
Jan30-04 06:53 AM
8LPF16
8 1,493
Let me see if I can make it clearer. Problem 5.5 In David Griffiths “Introduction to Quantum Mechanics” says: ...
Jan30-04 03:13 PM
Sacroiliac
0 1,483
Here is a proposal that comes right out of Star Trek! http://uk.arxiv.org/PS_cache/quant-ph/pdf/0401/0401186.pdf ...
Feb2-04 11:54 AM
ranyart
0 1,519
I am attempting to build an atom smasher as Mr. Kaku explained in his Big Thinkers interview. Does anyone know where...
Feb2-04 02:02 PM
Shinmyoken
0 6,967
Problem 5.5 In David Griffiths “Introduction to Quantum Mechanics” says: Imagine two non interacting particles,...
Feb2-04 07:07 PM
Sacroiliac
2 1,851
In critical phenomena, we can enlarge the block size(momenta fluctuation) by Kadanoff transformation, say k...
Feb4-04 12:58 AM
beacon
0 1,003
We all know that Maxwell did such a great work for all physicist. BUT, anyone knows that how Maxwell's theory of...
Feb4-04 07:18 AM
Hydr0matic
19 4,584
At the quantum scale physics becomes hugely unpredictable and particles appear to defy the laws of physics at every...
Feb4-04 02:05 PM
the_truth
4 4,297
i am taking a class in "the history of chemistry" and i chose to write a paper on "the history and development of...
Feb5-04 01:56 AM
lethe
1 6,416
I have been having some difficulty in trying to understand the difference between inductive and radiating...
Feb7-04 09:44 AM
McQueen
0 2,588
Anyone knows what would negative photonic reactions in a positively charged atom cluster do?
Feb7-04 08:53 PM
Muaddib
0 981
Guess I should know this but... Maybe a good quantum guy can help me out. In atomic transitions involving...
Feb7-04 11:40 PM
RedX
1 953
I am looking for a detailed step by step derivation of the Schrodinger Eqn. where one will obtain the general...
Feb8-04 12:53 AM
venkat
2 4,590
why a wavegfunction is square integrable?
Feb8-04 01:35 PM
Kit
2 2,958
please refer to the attachment. what is the physical meaning of g(k)?
Feb8-04 01:46 PM
RedX
1 6,501
I know that you don't have to get a photon with exactly the right energy to induce a transition between energy levels...
Feb8-04 06:12 PM
RedX
0 5,233
please refer to the attachment in the last part, it states that... If solutions phi.n.(r) can be found, for...
Feb9-04 12:50 PM
RedX
1 1,460
I think that if space time was discrete we wouldn,t have divergences or other anomalies...but can it be?..and if so...
Feb10-04 12:38 AM
GRQC
2 2,737
This weekend I have been reading the textbook of Paul Strange, "Relativistic Quantum Mechanics". There, in chapter 7,...
Feb10-04 08:35 AM
arivero
3 2,604
I have three angular momenta l_1,l_2,l_3 which I want to couple into one big one: L\equiv l_1+l_2+l_3. Can I...
Feb11-04 01:39 AM
suyver
3 1,739
In http:/arxiv.org/hep-th/0104028, a paper titled What is Quantum Gravity begins by addressing the question What is...
Feb11-04 10:53 AM
selfAdjoint
10 1,408
Hi, I'm going through my problem sheet for my quantum mechanics course, and I've come across something I don't...
Feb12-04 02:05 PM
Tom Mattson
2 1,066
Hello, I am a high school senior trying to a project on wave particle duality. I know alot of you are probably...
Feb12-04 05:12 PM
Loren Booda
9 2,141
Different sources show different ranges for the electromagnetic spectrum. Some sources say X-rays range from 10 nm to...
Feb12-04 05:17 PM
Nim
9 2,577
Greetings. I was reading a rather non-descriptive page about Bose-Einstein Condensates. I've never really read...
Feb12-04 06:01 PM
Adam
2 1,289
If an electron gains mass as it moves towards the speed of light where does this mass-energy come from? Does this not...
Feb13-04 02:03 PM
GRQC
64 5,431

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