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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 30,467
Is action at a distance possible as envisaged by the EPR Paradox?
Aug30-11 10:18 AM
charlylebeaugosse
1,502 136,662
Dear reader, What is the excat charge on a electron and proton? What is the net energy in a electron? I...
Nov4-03 01:37 PM
chroot
22 87,860
Thank you for the suggestion. I should say this is the first thread I am starting since I joined physics forums four...
Jan21-13 08:56 AM
jtbell
823 87,742
Hello, While the majority of physicists embrace the Many Worlds interpretation of quantum decoherence, I am holding...
Nov7-12 02:20 AM
Ilja
823 73,483
Any comments on the Pusey, Barret, Rudolph paper of Nov 11th? I didn't find any references to it via search here in...
Dec15-12 08:41 AM
audioloop
521 65,079
Hi all I know I raised a similar question in the thread "Wave particle duality", but it is already so full of many...
Oct11-07 05:55 AM
Haelfix
445 58,681
I have some extremely basic questions in QFT. First, P&S discuss causality in QFT in the first chapter of the...
Feb26-08 08:25 AM
Hans de Vries
317 54,229
is there anyway of doing bra-ket notation in latex?
Jul26-11 11:18 AM
Avodyne
4 52,779
quite simply the above question. Why does quantum entanglement not allow for faster than light communication? Thanks
Apr13-13 11:00 AM
DrZoidberg
83 52,361
http://www.bbc.co.uk/programmes/b018nn7l I did enjoy Brian Cox's program on quantum mechanics last night, but one...
Aug30-12 02:07 PM
audioloop
123 51,070
I'm interested in variouis views on this issue. How far away from a hypothetical center point does the energy of a...
Oct7-10 05:51 PM
berkeman
170 43,022
What's the difference between an excitation spectrum and an absorption spectrum for the same molecule? Are the words...
Feb7-10 03:45 PM
soli85
4 36,434
This showed up on the arxiv blog today: Joy Christian, "Disproof of Bell's Theorem," http://arxiv.org/abs/1103.1879 ...
Feb8-13 01:08 PM
bohm2
253 35,963
Einstein said that you don't truly understand something unless you can explain it to your Grandma. I think that this...
Jun7-11 10:43 AM
SpectraCat
404 34,424
You are no doubt familiar with Heisenberg's uncertainty principle, putting a limit on the accuracy with which we can...
Jan22-12 07:30 PM
San K
299 31,033
Hello, I am trying to teach myself quantum mechanics so take it easy on me. In 1905, Einstein proposed that...
Jan17-06 06:01 PM
jtbell
7 30,771
The famous Bell experiment would somehow proof non-locality and/or traveling of information faster then light. A...
Feb25-07 04:35 PM
wm
303 30,001
Can anyone please tell me what energy is made of? If this is a really bad question please feel free to eliminate this...
May23-06 08:36 AM
Doc Al
36 29,748
Hi everybody. I dropped in to Physics Forums for the first time in a while just to see what was going on in one of my...
Jun18-13 07:57 PM
DaleSpam
565 29,632
how big is a photon? what are its dimensions? if this is a meaningless question, please tell me why...
Sep2-12 09:38 AM
Vanadium 50
74 28,926
I've been trying to mine the web and Wikipedia but all I can find is his personal life, former students and some...
Nov14-06 01:09 PM
Dense
4 28,484
Hey everybody, since the previous thread got locked I thought I would open this thread as a place to discuss rigorous...
Apr23-10 09:51 AM
DrFaustus
246 28,323
Hey, just a quick one. Anyone know of some good links to actual photo etc of matter particals? Thanx.
Sep10-10 09:28 PM
nismaratwork
26 27,975
Hello, is it possible to reproduce the double slit experiment at home with some easily obtainable equipment? I was...
Jan3-13 04:11 PM
Pitullie Paul
32 27,583
I think it's time for the annual quantum interpretation poll. Vote for which interpretation you currently think...
Jun27-12 10:44 AM
harrylin
245 27,305
(Part of) The proof/logic of Bell's theorem goes thus: With the measurements oriented at intermediate angles...
Jul2-13 03:37 PM
DaleSpam
428 27,204
I've studied enough of physics and chemistry to find out this question has not yet been answered. All theories derive...
Feb27-09 04:29 AM
ZapperZ
35 26,404
for each massive body is assigned a wave length by the De Broglie formula: lambda=h/mv but, for example, a stone...
Mar18-08 10:25 AM
peter0302
4 26,176
Can Schrodinger's Equation be derived without a boundary condition? Particles according to quantum physics are only...
Jan7-08 04:03 PM
samalkhaiat
72 25,614
As we know, when we do calculations in QFT, we write down the ampitude, and find that it can be explaind as Feynman...
Jan9-11 06:05 PM
ZapperZ
250 24,733
Preamble: I have yet to find a reason to abandon my support of a LOCAL interpretation of QM; especially in relation to...
May3-07 10:38 PM
akhmeteli
246 24,706
Bohmian Mechanics conflicts with so many observational facts: 1. Bohmian Mechanics severely violates Lorentz...
Jun25-13 03:25 AM
Demystifier
235 24,541
from my thinking nonlocality and entanglement are never a problem because in a totally determinstic universe, the...
Apr6-12 01:07 PM
billschnieder
395 24,427
I'm a grade 10 student and very much interested in physics. Just wondering the difference between quantum mechanics...
May1-09 03:02 AM
workmad3
3 23,872
ive been reading on this forum that virtual particles flat out dont exist?then why is it said they exist for a certain...
Nov16-11 08:08 AM
byron178
301 23,331
Hi, I recently came across a proof for the De Broglie wave equation in a book, which went as follows: E of...
Mar21-09 04:43 PM
cristo
16 23,307
When a photon is emitted it goes in all directions ? or just in one ? N, S, E.. Or there is a probability you can...
Aug15-07 11:24 PM
pervect
244 23,180
There was a recent paper claiming to demonstrate the indivisibility of photons in a beam splitter experiment (the...
Oct5-05 08:10 AM
nightlight
128 23,149
http://www.physorg.com/news/2011-06-quantum-physics-photons-two-slit-interferometer.html ...
Jul26-12 04:30 AM
Demystifier
270 23,145
Hello, I wanted to have an idea of what this experiment is. I just passed my 10th grade and so I don't quite grasp...
Sep14-09 11:37 AM
Bob_for_short
38 23,081

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