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Feb2313 08:38 AM
ZapperZ

1 
36,471 
Although it is well known that a series of individual photons will build up an interference pattern in a double slit...

Apr2213 05:49 PM
DevilsAvocado

9 
5,293 
Ok so the equation E= hf about the energy of a photon, I'm having a problem understanding energies to do with photons....

Apr2213 05:04 PM
dextercioby

5 
678 
Lets say we have a potential step with regions 1 with zero potential ##W_p\!=\!0## (this is a free particle) and...

Apr2213 12:16 PM
71GA

15 
1,349 
1.does antiparticles really travels backwards in time or is it just used to describe feynman diagrams and diracs...

Apr2213 09:56 AM
bhobba

14 
1,183 
I was reading Griffiths's book on quantum mechanics.
In chapter 6, he tried to derive the spinorbit coupling using...

Apr2213 07:14 AM
Bill_K

2 
532 
Is there an intuitive way of understanding these terms? I understand the mathematics that shows why there are 3 states...

Apr2213 01:49 AM
DrDu

2 
619 
Exotic matter have a negative mass and goes in the opposite direction of the force applied to it. These properties...

Apr2113 09:02 PM
HomogenousCow

5 
598 
I know there's a flaw here as superluminal communicaton is impossible.
I was considering this scenario:
As with...

Apr2113 03:40 PM
bcrelling

7 
925 
From 'Modern Quantum Mechanics, revised edition' by J.J. Sakurai,
In page 44 the translation (spacial displacement)...

Apr2113 02:55 PM
micromass

2 
618 
Do you think that:
Single particle interference is explainable via entanglement?
For example: in the single...

Apr2013 07:21 PM
Vanadium 50

5 
869 
I am really confused about this!
So people thought that as wavelength increases for electromagnetic radiation,...

Apr2013 01:11 PM
Nugatory

5 
635 
In the infinite square well, the stationary states solutions form a complete set, and therefore I can write a function...

Apr2013 07:33 AM
stevendaryl

5 
628 
I need help proving the identity
...

Apr1913 11:46 PM
arkajad

27 
4,352 
Hi, I am currently studying quantum field theory with worldwidely used text written by Peskin and Schroeder. On page...

Apr1913 10:41 PM
ndcat10

2 
541 
Hi guys,
is there a reason why the energy of the harmonic oscillator is always written as:$$
E_{n} = \hbar \omega...

Apr1913 02:38 PM
dextercioby

1 
488 
why do we have moving detectors in Delayed Choice Quantum Eraser (DCQE) and similar experiments?
Why don't we have...

Apr1913 02:00 PM
San K

0 
378 
Hi everyone,
I'm stuck on the concept of the rotation operator in QM.
From what I understand, one constructs a...

Apr1913 12:58 AM
tom.stoer

5 
863 
Does anyone have a link or a reference to somewhere where these rules are explicitly derived for phifour theory?

Apr1813 08:46 PM
bhobba

4 
973 
I'm not clear as to how the overall interference pattern (or lack thereof) observed in the quantum eraser experiments...

Apr1813 06:46 PM
msumm21

6 
728 
With reference to the following lecture by Leonard Susskind :...

Apr1813 02:14 PM
dextercioby

1 
482 
If I use hydrogenlike orbitals for other atoms, how are the number of nodes and probability density affected?

Apr1813 12:01 PM
cgk

2 
519 
It is often said that the photon is the long range force carrier like the static force between electrons. Lets say we...

Apr1813 11:48 AM
ftr

2 
670 
Also how can local causality be violated?

Apr1813 09:52 AM
DrChinese

1 
436 
Hi I am teaching myself QFT using peskin and schroeder and have a few problems
1) On page the author goes from \int...

Apr1813 09:49 AM
pleasehelpmeno

0 
395 
Hi Guys
For all people interested in Schrodinger's Cat check out Leonard Susskind's explanation  very lucidly...

Apr1813 09:47 AM
bhobba

0 
845 
Dear all,
I am working on 8 band k.p model and I am intrested in the way of derivation of explicit analytical...

Apr1813 08:41 AM
aziziph

0 
426 
The principle states: δxδp≥h/4π
I understand what it means and ive seen in proven both theoretically and...

Apr1713 08:00 PM
fluidistic

4 
746 
In its standard formulation, the CPT theorem says that any local Lorentzcovariant quantum field theorem will be...

Apr1713 07:22 PM
LastOneStanding

2 
547 
Why did Max Planck refer to his own radiation law...

Apr1713 05:07 PM
LayMuon

1 
885 
In the one moment you accept something in the other you're not sure why? Why probability density in quantum mechanics...

Apr1713 12:14 PM
ttakacs

11 
1,368 
I am very confused by the treatment of Peskin on representations of Lorentz group and spinors.
I am confronted with...

Apr1713 10:29 AM
silverwhale

13 
1,106 
I can't seem to find a definitive answer to my questions surrounding this topic, every textbook I read is rather...

Apr1713 09:47 AM
fzero

4 
625 
What is the quantum of an electromagnetic wave? Quantum of light is photon. What is the quantum of a gamma ray or an...

Apr1713 06:53 AM
L4xord

4 
594 
Hi guys having a little trouble with twoqubit state multiplication.
Could you tell me how you work out the...

Apr1713 05:32 AM
kith

5 
642 
The Wigner function,
W(x,p)\equiv\frac{1}{\pi\hbar}\int_{\infty}^{\infty}
...

Apr1713 05:01 AM
Bill_K

6 
771 
Hi all! I was reviewing some basic quantum mechanics, and I was trying to 'derive' the equation
i \hbar...

Apr1613 06:38 PM
BruceW

8 
987 
We know electric current travels around 200000 km/s.. Yet electrons are moving way much slower, just acting as a...

Apr1613 04:34 PM
ExecNight

4 
648 
As an atmospheric physics major I am familiar with electromagnetic radiation in the atmosphere and what dictates what...

Apr1613 03:06 PM
Naty1

5 
858 
In the chapter on partial wave analysis in Griffiths's Introduction to Quantum Mechanics, he considers a spherically...

Apr1513 08:33 PM
Meir Achuz

4 
1,085 
Reflection/refraction of light is due to the absorption of photons by electrons in the governing atoms, and is then...

Apr1513 08:29 PM
Meir Achuz

4 
533 