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Feb2313 08:38 AM
ZapperZ

1 
36,443 
Hi guys, my quesion is quite simple but I think I need to give some background...
Let's suppose I have 3 qubits, so...

T 11:40 PM
king vitamin

3 
149 
http://en.wikipedia.org/wiki/Schr%C3%B6dinger's_cat
I don't understand, if the radioactive source is put in there...

T 10:33 PM
PeterDonis

6 
188 
I want to discuss the theorem proved in the article "Quantum states and generalized observables: a simple proof of...

T 10:25 PM
bhobba

48 
4,176 
When the two polarizers are set 60 degrees apart, for example, QM prediction is 25% correlation. It is already...

T 08:56 PM
stevendaryl

65 
1,018 
Suppose you meet a layman who has not even had Freshmanlevel college physics, but who has HEARD of or read something...

T 07:15 PM
ChrisVer

4 
227 
Everywhere I read about the angular momentum / spin of electrons and how a 1/2 spin particle has a unique...

T 04:44 PM
Nugatory

4 
227 
The hypothesis that a conscious observer collapses the wave function has been discarded, right? The real reason is...

T 12:51 PM
Ken G

85 
1,408 
If 4s orbital is in the 4th shell and 3d is in the 3rd shell and if the Principal Quantum Number is the direct...

T 10:36 AM
Yashbhatt

4 
203 
How do quantum fluctuations originate?

T 09:06 AM
WannabeNewton

9 
283 
I have only ever seen the wavefunction for a spin 1/2 particle written in the basis set α> β>. I was interested in...

T 08:46 AM
DrClaude

6 
190 
Hello,
I'm a student which needs to setup a HBT experiment in the lab and I have some questions. I already read this...

T 08:13 AM
Cthugha

25 
340 
Dear members of this forum.
My name is Roberto, I am a medical doctor who wants to study and focus on quantum...

T 06:29 AM
bhobba

1 
118 
I just watched a video discussion on the modern interpretations of the wave function. In it I was introduced to...

Y 03:29 PM
Drakkith

50 
713 
Hello,
in Schwartz's QFTbook it says that:
"Classically, a box of size L supports standing electromagnetic waves...

Y 01:13 PM
atyy

7 
328 
Do you know if there are experiments on particles having interacted which illustrate the Neumark dilation theorem?

Y 10:57 AM
atyy

4 
304 
quite simply the above question.
Why does quantum entanglement not allow for faster than light communication?
Thanks

Y 10:28 AM
bhobba

97 
57,595 
Hello,
Schrödinger's Picture: Researchers Take An Image Without Ever Detecting Light which speaks about the ...

Y 04:47 AM
vanhees71

3 
241 
if a hydrogen atom has only 1 proton and 1 electron what is the reason that the electron does not collapse onto the...

Aug3014 06:59 PM
Matterwave

15 
357 
Since Wilson work in the 70s, the renormalization technique in QFT is physically justified with the concept of scale...

Aug3014 01:12 PM
TrickyDicky

5 
253 
No, it is not! Actually it is something to do with the scalar wave equation. Let us assume that a solution of the...

Aug3014 11:29 AM
berkeman

15 
368 
I have a question: can the mechanism behind Pauli's exclusion principle be considered a fundamental force, like...

Aug3014 10:47 AM
Ken G

46 
961 
In particle physics we know that total angular momentum is conserved and its equal to orbital angular momentum plus...

Aug3014 09:32 AM
Quarlep

2 
223 
Recently, the properties of nonequilibrium manybody quantum systems have aroused great curiosity of physicists....

Aug3014 04:59 AM
Billy Yang

4 
251 
In Quantum Mechanics, why do the dynamical variables become operators? What is the justification or motivation, if any...

Aug2914 10:33 PM
andresB

6 
389 
I just wanted a conformation of this sorry but I have bad ocd. If I could have some sci advisors help with this id...

Aug2914 10:11 PM
DaleSpam

8 
251 
Hi I am curios about something we know E2=(mc2)2+(pc)2 than Paul Dirac maid E2=(mc2)2 than we know he find antimatter ...

Aug2914 01:41 PM
Drakkith

3 
131 
I have seen only two arguments for the fact that composite particles, like protons, nuclei, or even Helium4 atoms,...

Aug2914 12:24 PM
Avodyne

10 
368 
Why can we not be more precise when shooting stuff through the double slit, so that we know if it goes in the...

Aug2914 05:16 AM
DaleSpam

43 
666 
I know that the positron and electron have the same mass, which allows them to annihilate, and I know how solve the 2...

Aug2914 01:32 AM
bhobba

4 
197 
hi,
What is the difference between radial polarization and optical vortex?
thx
...

Aug2814 04:48 PM
Greg Bernhardt

1 
265 
Do gauge fields work the same way as the Higgs field?
Are gauge fields all encompassing too, like the Higgs field?...

Aug2814 04:26 PM
J'onn J'onzz

2 
148 
There is an old controversy in quantum mechanics, with arguments on the borderline between science and philosophy, on...

Aug2814 12:44 PM
DaleSpam

69 
1,761 
Quantum theory is called "quantum" because it is supposed to be about quanta  discrete spectrum of certain quantities...

Aug2814 12:03 PM
stevendaryl

36 
843 
Here I criticize the whole concept of weak measurements and weak values in quantum mechanics, first proposed by...

Aug2814 09:33 AM
Demystifier

0 
173 
Here is a simple analogy that helps to understand the basic idea of the Bohmian interpretation of quantum mechanics. ...

Aug2814 09:32 AM
Demystifier

9 
859 
Hi Guys, I am facing a problem playing around with some operators and Kets, would like some help!
I have \langle...

Aug2814 07:28 AM
bhobba

3 
248 
I am not sure this is the right place where I should post, I hope I've chosen the right section.
I'm studying...

Aug2814 05:15 AM
kspace

3 
193 
In a paper entitled
"Nothing happens in the Universe of the Everett Interpretation":
http://arxiv.org/abs/1210.8447...

Aug2814 02:02 AM
Demystifier

15 
437 
The wave function solution psi is a function of time and position. Hence the integral of its square over all x will,...

Aug2714 08:31 PM
atyy

3 
226 
http://phys.org/news/201408dualityprinciplesafeapparentviolation.html
It seems an experiment was performed...

Aug2714 04:14 PM
StevieTNZ

2 
290 