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Feb2313 08:38 AM
ZapperZ

1 
36,204 
Initial assumptions :
1. An unpolarised photon has 50% chance of being transmitted through a linear polariser.
2....

T 02:11 PM
Nugatory

7 
157 
If I had a factory that produces pairs of gloves. And I packed one box with the left glove and another with the...

T 02:02 PM
Jabbu

128 
1,562 
Just curious what folks think will be the ramifications of this latest finding from the timesymmetric quantum...

T 01:55 PM
microsansfil

4 
81 
Hi, I'm relatively new to QM so just a basic explanation of my problem would be amazing!
I'm doing some internet...

T 01:48 PM
Meir Achuz

2 
74 
Hello.
From Schwartz QFT BOOK,
How could Eqn 5.26 can be Eqn 5.27?
d \Pi_{LIPS}=(2 \pi) ^{4} \delta^{4}(\Sigma p)...

T 12:51 PM
WannabeNewton

9 
128 
Good afternoon : I now what I've written here : http://www.physicsforums.com/showthread.php?t=763322 in the first...

T 12:05 PM
microsansfil

7 
177 
Hi guys,
I thought that psi^2 was a probability density function and that when integrated over a region this would...

T 10:53 AM
Demystifier

17 
312 
Recently, the properties of nonequilibrium manybody quantum systems have aroused great curiosity of physicists....

T 09:15 AM
atyy

1 
95 
I got some questions about QM (not well organized)
There is waveparticle duality. To my understanding, particle...

Y 09:43 PM
Simon Bridge

5 
164 
I got confused when in my book they went from one form of schrodinger equation to another. It doesnt make much sense...

Y 09:08 PM
QMechanic

2 
105 
So did anybody have figured out why did OPERA experiment failed?? Does any one know why neutrinos appear to travel...

Y 07:17 PM
berkeman

5 
189 

 
 
 
Hi everyone.
I can not remember if, in 3D, the higher it is the energy level, the higher it is its degeneracy. With...

Y 01:20 PM
Telemachus

2 
153 

 
 
 
Hi everyone,
Recently I read an introduction to quantum information and got interested to begin a research work on...

Y 04:36 AM
PaulDirac

4 
246 
As far as I can understand, quantization of a system is to take poisson brackets to commutators. i.e.\{something\}\to....

Y 03:42 AM
rubi

9 
332 
What is your thought s about quantization and discontinuity in physics.......is possible?......if yes then How?

Y 01:31 AM
D.R.U

4 
149 

 
 
 
Hi,
I would appreciate suggestion which chapters from French's "Waves and Vibrations"...

Aug2014 10:39 PM
bhobba

13 
225 
Are lower energy electron orbitals always closer to nucleus than higher energy orbitals? Is this energy proportional...

Aug2014 09:51 PM
DaleSpam

18 
534 
In Quantum Mechanics, why do the dynamical variables become operators? What is the justification or motivation, if any...

Aug2014 08:15 PM
bhobba

2 
181 
I know how the canal rays are produced. As I looked from wikipedia;
"The process by which anode rays are formed in...

Aug2014 04:28 PM
onurbeyaz

0 
114 
Is there any difference between Hamiltonian operator and E? Or do we describe H as an operation that is performed over...

Aug2014 02:03 PM
Orodruin

2 
147 
Hi, can smart people please assist me with understanding something: why doesn't the "final" observation at the back...

Aug2014 12:57 PM
Nugatory

7 
229 
Having just watched Prof Carl Bender's excellent 15 lecture course in mathematical physics on YouTube, the following...

Aug2014 10:32 AM
qtm912

0 
94 
Am I the only one who sees the resemblance between these two identities?
Schouten:
<p q> <r s> +<p r> <s q>+ <p...

Aug2014 07:29 AM
MathematicalPhysicist

0 
144 
I am referring to the section The Harmonic Oscillator in Griffiths's introductino to quantum mechanics (the older...

Aug2014 07:12 AM
stevendaryl

6 
213 
Im somewhat new to modern physics, had one introductory class in my university and because it fascinated me so much,...

Aug2014 06:39 AM
bhobba

8 
895 
(I am referring to section 3.1 in Burkhardt's "Foundations of Quantum Physics", if you happen to have the book.)
In...

Aug2014 04:50 AM
mcheung4

0 
169 
In quantum mechanics, POVMs can be considered more fundamental than PVMs because PVMs can be considered a special sort...

Aug2014 02:40 AM
Demystifier

15 
371 
if photons bounce into each other at a frequent rate, and photons bouncing off of each other may result in large...

Aug2014 12:54 AM
Warpspeed13

4 
245 
Author: ZapperZ
Originally posted on Jun1614
Strangely enough, QM's formalism isn't any more difficult than other...

Aug1914 04:04 PM
Sugdub

102 
2,723 
Assume that I have a sample of an element which is electrically neutral, I want to know the number of protons, and...

Aug1914 03:38 AM
PhysicistMike

2 
275 
Why do alpha ray tear out neutron in Be, but dont do such thing in Au?

Aug1814 11:00 PM
e.bar.goum

7 
218 
If you have a momentum integral over the product of propagators of the form \frac{1}{k_o^2E_k^2+i\epsilon} , why are...

Aug1814 09:25 PM
Avodyne

5 
346 
Hello
In the usual Hibertspace formulation of quantum mechanics, to each physical system is attached a separable...

Aug1814 11:36 AM
microsansfil

4 
263 
Hello,
I'm taking a break from school this semester to work and pursue interests that I have let fall to the...

Aug1814 09:44 AM
atyy

1 
264 
I always thought that magnetism was the exact same thing as electricity because of SR. That's probably why I am...

Aug1814 02:20 AM
MrRobotoToo

4 
338 
I watched a video about particle physics and there I saw something strange(for me)...

Aug1814 02:18 AM
MrRobotoToo

6 
327 
I don't know much thing about rays. When I was studying Rutherford experiment, I saw that nucleus scattered the alpha...

Aug1814 12:08 AM
e.bar.goum

2 
159 