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Feb2313 08:38 AM
ZapperZ

1 
30,359 
Good morning. I am wondering what is the nature of virtual particle production beyond the event horizon of a black...

Apr1912 04:35 PM
Bill_K

3 
830 
http://www.popsci.com/science/article/201204/firsttimeelectronsareobservedsplittingsmallerquasiparticles
...

Apr1912 02:18 PM
Runner 1

2 
923 
Are there any cases where a particle and its antiparticle have opposite intrinsic parity? I've never seen such a...

Apr1912 01:58 PM
benjammin

0 
892 
Hi all,
I was wondering if anyone could help me with some general rules for which parts one should include in a...

Apr1912 11:49 AM
benjammin

0 
550 
In the twoslit experiment, as I understand it, an interference pattern can be generated by sending many electrons (or...

Apr1912 10:47 AM
dabble

5 
619 
The wave function represents all that can be known about a quantum system, but that usually means that we only know...

Apr1912 09:43 AM
DrChinese

69 
7,748 
I know this topic has been addressed on this forum ad nauseam and please redirect my post if it is posted incorrectly....

Apr1912 07:46 AM
jtbell

4 
884 
We are starting to learn about spin in my introductory quantum mechanics course, and I was wondering if anyone could...

Apr1912 01:02 AM
tom.stoer

5 
1,173 
Hi,
I am reading through Section 3.4 of Lewis Ryder's QFT book, where he makes the statement,
This makes...

Apr1912 12:13 AM
tom.stoer

3 
910 
What are you guy's thoughts on constructing a quantum computer from attosecond doubleslit phenomena?

Apr1812 06:23 PM
channel

3 
2,371 
It is interesting that our elementary fermions have 1/2 spin, meaning it takes a full 720 degree rotation to bring...

Apr1812 05:58 PM
zen loki

9 
1,459 
Hello, why do the electrons with higher quantic number N have more energy than the electrons with lower N if they need...

Apr1812 04:32 PM
Ken G

1 
796 
I like the way quantum mechanics can be expressed as a set of five or six axioms, like in Daniel T. Gillespie's A...

Apr1812 07:34 AM
A. Neumaier

29 
3,445 
Dear physicist,
I designed an experiment for my undergraduate students. As we know, for spin operators, the...

Apr1812 06:37 AM
Bill_K

4 
1,264 
Hello guys,
I need the quantum mechanical description of the Cesium atom/gas with its hyperfine states, and...

Apr1812 06:13 AM
TheDestroyer

10 
1,297 
If the 2slit experiment is modified by adding apartition between the barrier and the electron detector screen,...

Apr1812 02:28 AM
Demystifier

4 
1,195 
How can we compute the expectation value, <\widehat{x}\widehat{p}> where ψ(x) is a normalized wavefunction? (The...

Apr1812 12:59 AM
tom.stoer

1 
849 
I know the generalized formula for Feynman parameters, my problem is in simplifying.
What I mean is something like...

Apr1712 09:13 PM
Avodyne

5 
1,146 
Hey!
Could someone please explain to me what the exchange integral exactly represents? I understand the coulomb...

Apr1712 07:40 PM
elfrotardo

3 
11,674 
what is the wave packet combine to particle ??
how it's describe the position of particle ?

Apr1712 02:43 PM
sciboudy

0 
346 
We don't know what travels through the various paths, however we can, at the least, talk about the properties of what...

Apr1712 10:26 AM
San K

4 
791 
I've been watching Sidney Coleman's QFT lectures (http://www.physics.harvard.edu/about/Phys253.html). I've gotten up...

Apr1712 09:36 AM
Chopin

3 
1,163 
Hi!
During a lesson, the prof said that the Fock space could be nonseparable. When can this happen?

Apr1712 08:59 AM
Bill_K

6 
1,344 
Is spin of electron taken into account when people accelerate electron in LHC?

Apr1712 08:56 AM
mfb

1 
614 
Suppose you theoretically have two betatrons each accelerating a particle near light speed in opposite directions....

Apr1712 08:42 AM
DrChinese

3 
936 
How the virtual photon exchange theory be used to derive completely Coulombs Law related to electrostatic field?...

Apr1712 12:40 AM
tom.stoer

2 
2,398 
If I understand the equipartition theorem more or less well, if I heat up a gas then the energy I have spent to heat...

Apr1612 05:25 PM
fluidistic

2 
1,065 
Hi,
I'm trying to work through something and it should be quite simple but somehow i've gotten a bit confused.
...

Apr1612 04:54 PM
Irrational

3 
854 
Hi all, just studying for my final exam and needed a little clarification on this.
Our prof did an example:...

Apr1612 02:15 PM
Chopin

1 
1,279 
Quantum mechanics ideas:
the idea of quantum mechanics and computing is mind boggling and impossible to fully...

Apr1612 10:06 AM
DrChinese

1 
911 
I had a quick question on the uncertainty principle. I'm not a physicist but I'm familiar with the basic theories. ...

Apr1612 08:24 AM
Naty1

4 
1,332 
Hi,
Suppose I have a 2D spinless electron bounded by a parabolic confining potential. If we add a magnetic field...

Apr1612 04:58 AM
ocotlet

0 
1,303 
At the moment I am studying the Schrodinger equation using this resource.
In a 1D solution (sec 3.1 in the paper)...

Apr1512 10:31 PM
SeannyBoi71

3 
1,108 
Any boolean formula can be represented efficiently as a reversible circuit (i.e. with at most a polynomial increase in...

Apr1512 04:46 PM
IttyBittyBit

3 
869 
Is Dirac's Sea entirely discounted now?
He did predict positrons  that were later found. And mirrors have been...

Apr1512 04:45 PM
bhobba

1 
779 
Can anybody clear this up for me?
In his Chicago lectures in 1930, Heisenberg is quoted as saying
“The...

Apr1512 02:12 PM
Goodison_Lad

2 
901 
According to the more popular interpretations of (parts of) QM:
photon (properties) are in an indeterminate state...

Apr1512 12:20 PM
mathal

37 
2,763 
When you have an ordinary (read: spin zero) particle with a quantum state ψ>, the corresponding positionspace wave...

Apr1512 09:59 AM
Chopin

5 
1,170 
Supposed we are given a set of SUSY transformation law, the way to get the BPS equation is by requiring that
\delta...

Apr1512 09:26 AM
Lemaho

1 
1,551 
I know that wind is the result of fluids being drawn from high pressure to low pressure among other classical forces. ...

Apr1512 06:44 AM
mfb

1 
546 