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Feb2313 08:38 AM
ZapperZ

1 
30,365 
let there be a system of two electrons and thus have s1=s2=1/2 and m1=m2=+1/2.
the singlet state is:
0,0> =...

Feb2412 02:08 AM
The_Duck

2 
1,227 
I'm sure something like this has been posted before but I would appreciate if you humor me. I've been reading the...

Feb2412 09:08 AM
DrChinese

6 
889 
Renormalization Group concept is rarely given in laymen book on QM and QFT and even Quantum Gravity book like Lisa...

Feb2412 07:55 PM
strangerep

47 
4,707 
Hi,all, I m an undergrades and I am suffering on understanding the different representation transformations, namely...

Feb2512 07:48 AM
luxiaolei

0 
571 
Edgardo thanks for posting the links to Bell's Theorem. I read the first one and it was a clear description of Bell's...

Feb2512 08:43 AM
San K

4 
812 
Hello everybody,
I was revising for my quantum mechanics course and I was wondering why when we approximate the bond...

Feb2512 09:13 AM
achilleasatha

0 
619 
when a photon goes through a polarizer, its spin becomes determinate
how does it become indeterminate later?
...

Feb2512 09:14 AM
San K

0 
545 
Hi i am student from India who has completed his Bsc degree and have applied to few Universities in Europe for Msc in...

Feb2512 11:04 AM
quantumboy

0 
1,680 
Greetings chaps,
This will probably be old hat to most of you, but I'm beginning to start Quantum mech. so that I...

Feb2512 11:32 AM
ibazulic

7 
915 
Hello all, I am having trouble understanding how this works. In Krane there arises a discussion on total angular...

Feb2512 12:23 PM
Bill_K

1 
1,205 
Light consist of photons but also has a wave nature which consists of electric and magnetic waves right?
So when...

Feb2512 12:29 PM
juanrga

2 
1,317 
anybody?

Feb2512 02:09 PM
Mr_Physicist

7 
943 
Is it possible to acheive commercially viable nuclear fusion in purely electrostatic quantum tunneling way?What should...

Feb2512 02:11 PM
cmb

2 
1,369 
How close do two room temperature deuterium nuclei need to be to each other to have a oneinaquintillion chance of...

Feb2512 02:20 PM
cmb

19 
3,907 
Since every fundamental particle in the Standard Model should have it's anticounterpart?
Also, after the LHC has...

Feb2512 02:42 PM
Michio Cuckoo

5 
1,267 
Do the wave functions for smaller objects disperse faster?
How long does a macroscopic wave function (for example...

Feb2512 05:30 PM
jtbell

1 
780 
Note the wave function in the Schroedinger Equation has phase freedom from 0 to 360 degrees.
Imagine the Mexican...

Feb2612 07:02 AM
waterfall

0 
567 
hello there,
i've read in several places the following: if you have a polyene with J double bonds, and taking into...

Feb2612 07:04 AM
sweet springs

5 
1,250 
I was doing a question while back about finding the de Broglie wavelength of a bullet with a given mass travelling at...

Feb2612 07:29 AM
ZealScience

3 
756 
Is it the same as the total angular momentum quantum number ?????

Feb2612 08:45 AM
Chemist20

2 
1,222 
hi
my question is simple: is there empty space with null energy?
thx.

Feb2612 09:41 AM
avery

2 
784 
Hi
Say I want to describe the interaction between a free atom atom and a classical EM field. The full Hamiltonian...

Feb2612 01:52 PM
Niles

3 
793 
Do you consider "photon" as belonging to classical physics or nonclassical physics? When Einstein discovered the...

Feb2612 03:18 PM
Jano L.

5 
1,108 
We know from classical mechanics that angular momentum L = r \times p depends on your choice of origin. My question...

Feb2612 04:29 PM
widderjoos

3 
1,133 
I think I'm trying to reconcile quantum mechanics and special relativity . . . or whatever I'm doing I'm pretty...

Feb2612 09:09 PM
fhqwgads2005

5 
1,313 
From what I've gathered reading the scientific literature, the more precise we know a quantum system's position, the...

Feb2612 10:58 PM
AdrianMay

9 
1,084 
Two questions regarding decoherence
1) preferred pointer basis:
Decoherence explains why a quantum object...

Feb2712 06:51 AM
A. Neumaier

14 
1,782 
Hello,
I can understand only the basic principle behind quantum entanglement. Do you guys know of the mechanism by...

Feb2712 08:52 AM
DrChinese

3 
1,206 
Hi,
I know very little about quantum physics so I need some help here, but recently I have seen lots of new agers...

Feb2712 09:17 AM
BWV

12 
2,026 
Below are 2 states in the gluon octet.
What is the difference between:
...

Feb2712 01:09 PM
Ben Niehoff

1 
792 
Hi everybody! I'm studying this paper "Unambiguous discrimination among quantum operations"...

Feb2712 03:47 PM
provolus

0 
893 
Last night I started reading the section of Brian Cox's "The Quantum Universe" where they discuss how to calculate the...

Feb2712 09:23 PM
StevieTNZ

29 
2,991 
Hello,
I was solving the time dependent schrodinger equation in a timeindependent potential such that E<V and I...

Feb2812 12:13 AM
zhermes

1 
784 
Hi,
After some (limited) reading I've written an article on the captioned subject :
...

Feb2812 12:46 AM
sytstp

5 
1,671 
Hello there,
I was reading an article on wiki about the Breit equation:
...

Feb2812 04:50 AM
juanrga

3 
1,407 
Suppose a K.G. field. When I apply the creation operator on the vacuum, how do I know it is a pion or any other boson?

Feb2812 12:04 PM
intervoxel

3 
940 
There are tons of interpretations of quantum mechanics, but I'm unaware of any that are 'classical' as in being local,...

Feb2812 01:41 PM
Xilor

24 
1,916 
Greetings everyone,
I haven’t done any quantum in a while, and was reviewing my textbook, Griffiths Ed. 1. The form...

Feb2812 04:11 PM
HJ Farnsworth

5 
1,151 
When electrons jump from one shell to another energy has to be released right? Why is only light energy released? Why...

Feb2812 08:52 PM
questionpost

7 
1,432 
I am reading about dense coding, and I can't understand which qubit does Alice send to Bob. Her qubit or the shared...

Feb2912 02:54 AM
calculemus198

0 
595 