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Feb2313 08:38 AM
ZapperZ

1 
30,477 
Hi you guys!
I am having a hard time understanding some stuff in this context.
I was not able to find any guidance...

May612 09:07 AM
Fredrik

9 
886 
Hi, First of all i apologies if this topic already exists
I was wonder how the partical model of light and wave model...

May512 06:53 PM
Vorde

1 
1,571 
In regards to the attached image;
If the input photons were, for input b = photon #2, and for input c = photon #3,...

May512 02:34 PM
StevieTNZ

4 
951 
I have been trying to find this information for years. I browsed amazon.com, starting with Lisa Randall's book, and...

May512 02:11 PM
UrbanDixie

0 
649 
The Everett interpretation assumes that there is no wavefunction collapse  instead everything is unitary.
I'm not...

May512 01:37 PM
deneve

0 
574 
I was reading about the two slot experiment and how electrons appear to be wavelike as well as particlelike. How can...

May512 01:17 PM
Adel Makram

1 
591 
Hello everybody,
I've been trying to understand the CHSH proof as it is listed on Wikipedia:...

May512 11:02 AM
gespex

4 
923 
I am confused about the the notation ab> for an entangled pair. Isn't this the same as the tensor product a> \otimes...

May512 06:33 AM
nomadreid

0 
467 
First off let me state that I'm just a mechanical engineering student, so I'm not too savvy when it comes to quantum...

May412 08:02 PM
clearwater304

5 
1,296 
\{\vec{A},\vec{B}\}\cdot \vec{C}=\vec{A}(\vec{B}\cdot \vec{C})
\vec{C} \cdot \{\vec{A},\vec{B}\}=(\vec{C}\cdot...

May412 07:28 AM
Fredrik

3 
736 
Lets say you have a particle A, which then physically interacts with particle C and B to become entangled. Since A is...

May412 01:46 AM
StevieTNZ

3 
708 
The four vector J_μ is the source of the Electromagnetic potential four vector A_μ. If I wanted a source term for the...

May312 09:25 PM
Spinnor

2 
975 
There is something that has been bothering me recently: that is, the distinction between a separable state and being...

May312 04:21 PM
Dali

2 
955 
Hi, I started two months ago my course in QFT, and since I heard about the fact that the bare mass appearing in the...

May312 03:06 PM
fzero

3 
709 
Dear Physics Forum,
I understand that forces between fermions are mediated by virtual bosons. My "sense"
of it is...

May312 11:59 AM
a dull boy

0 
691 
the spin orbit coupling removes the degeneracy but not completely, should we still use the degenerate perturbation...

May312 11:54 AM
alemsalem

1 
937 
Weinberg in his 1st book on QFT writes in the paragraph containing 2.5.12 that we may choose the states with standard...

May312 08:21 AM
Lakshya

2 
844 
Hi!
I've read a lot of posts about the photon wavefunction. I'd like to ask you if this statement is correct:
"It is...

May312 06:35 AM
Demystifier

7 
1,255 
I have the fifth edition of 'Physics' by Halliday, Resnick and Krane.
In the chapter 'The Nature of Light' it is...

May312 02:35 AM
soldier sunny

4 
2,984 
Hey all. I have posted a thread regarding this question a while back. I did get an answer and everything. (Here is my...

May312 02:16 AM
perplexabot

2 
786 
In another thread, we were discussing Zonde's and the De Raedt's model for simulating Bell tests using a purported...

May312 02:02 AM
harrylin

82 
10,512 
How can i solve Schrodinger equation in 3dimension i want to know how can i deduce every equation ? and...

May212 06:11 PM
fzero

2 
829 
Hello, I need a help for making a short visual presentation of superposition and wavefunction collapse. It will be a...

May212 04:30 PM
kyoto

0 
689 
I'm doing an exercise regarding the spinorbit operator and the Dirac equation/particles, and I'm having trouble...

May212 12:57 PM
Bill_K

1 
655 
In principle, what is the absolute simplest arrangement to cause decoherence? In other words what constitutes a...

May212 10:05 AM
TrickyDicky

9 
1,151 
HI,
I am looking for the ''Physics of Quantum electronics vol.8 chap.5'' I could no where find this book /journal...

May212 10:04 AM
marygreen

1 
751 
How to sum in phase space with discrete energy? We have a question that needs to calculate Edp^3. If energy E is a...

May212 08:12 AM
mings6

0 
310 
One of the more common ways of showing that a Hamiltonian with periodic potential commutes with the translation...

May212 04:03 AM
Hurkyl

2 
1,248 
Greetings!
I have a question about the current interpretation of the laws of nature which, according to what I...

May112 11:40 PM
johnny55

3 
3,752 
Well I'm trying to understand the doubleslit experiment (and quantum mechanics), so could you tell me if this is...

May112 05:27 PM
ace frehley

2 
761 
Hi!
In Weinberg's book "The quantum theory of fields", chapter2, it states that the transformation
of a massive...

May112 03:18 PM
dextercioby

1 
683 
Hey
I been reading about an experiment that took place involving two metals plates in a vacuum, of which they are...

May112 02:12 PM
Mr_Physicist

3 
844 
Please teach me this:
Despite perfect theories(e.g quantum theory) we never have a absolutely fitted between...

May112 01:53 PM
f95toli

7 
1,170 
Wave functions and their exp(ipx) are base of quantum mechanics and QFT. But how to derive them the most simply that...

May112 01:51 PM
jbcool

6 
2,339 
Entangled particles are used in various experiments for example:
DCQE (delayed choice quantum eraser)
Bells tests...

May112 10:48 AM
San K

2 
749 
I came across this statement from James Hartle on Stephen Hawking's website,
http://www.hawking.org.uk/
and...

May112 07:54 AM
Naty1

3 
2,110 
Is the following the definition of wedge product in tensor notation?
Let A \equiv A_i be a matrix one form. Then...

May112 03:47 AM
haushofer

1 
1,074 
Hi,
I am trying to figure out the following integral. I have two normalized 1D harmonic osccilator wave functions...

May112 01:17 AM
TomDance

5 
963 
Quite often one can see descriptions saying that the coherence time of single photons corresponds to the length of the...

Apr3012 10:26 PM
Bob S

5 
1,671 
I was wondering about a system, specifically quantum, though classical solutions are still welcome, which was...

Apr3012 05:22 PM
jbcool

0 
590 