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Feb2313 08:38 AM
ZapperZ

1 
30,318 
Something I've always wondered: You throw matter into a black hole, but get half matter and half antimatter out due...

Sep1410 06:18 PM
bcrowell

5 
1,410 
Hello,
How is a static magnetic or electric field understood in terms of QED.
Is it correct to interpret them as...

Sep1410 05:13 PM
zhermes

1 
759 
Einstein proved dualty in light & debroglie suggested dualty in matter.we know superposition takes place in light...

Sep1410 05:04 PM
Parbat

2 
638 
Lets say we have a system in a 1D infinite potential well, prepared somehow with the wavefunction: (phi)=C(ax)x. I...

Sep1410 03:51 PM
ricegrad

0 
1,073 
Hi
I would really appreciate if someone could answer what maybe a really simple question. I'm no physics expert but...

Sep1410 02:36 PM
chwie

9 
2,866 
hi i resently read about Schrödinger's experiment called the Schrödinger's cat experiment which states that things...

Sep1410 01:45 PM
247a

0 
717 
There are datasheets of IR sensors like the TSOP1738 that conveniently tell me that when I make an IR LED flash at...

Sep1410 12:53 PM
AndersonMD

30 
3,719 
Hi,
In ch22, Srednicki considers the path integral Z(J)=\int D\phi \exp{i}
He says the value of Z(J) is...

Sep1410 12:09 PM
arkajad

1 
526 
I have some questions about the very new and theoretical field of quantum computing and would love to learn more. Is,...

Sep1410 10:31 AM
247a

1 
506 
has any one ever measured the path an electron take through space is it a straight light or is there an unknown...

Sep1410 09:30 AM
clm321

2 
1,327 
The 4th derivative of a sine wave is itself. This, of course, not only is a fact, but can be used to define the sine...

Sep1410 04:42 AM
ThePhysicsGuy

0 
1,196 
Do theories exist that describe gravity with Feynman path integral modification? Due to the rules of the forum, I...

Sep1410 02:43 AM
ThePhysicsGuy

0 
840 
Do virtual particles break the conservation laws? Thanks

Sep1310 06:01 PM
filegraphy

3 
871 
Hasn't this been disproved by wave function collapses?

Sep1310 05:16 PM
haael

2 
572 
Me and a friend at school have been thinking about this question for a while and have come up with a few perspectives,...

Sep1310 03:19 PM
Boy@n

15 
1,635 
I have a question I havnt been able to figure out by reading or googling:
If we have an entangled pair of...

Sep1310 12:54 PM
DrChinese

8 
1,228 
i am now studying dirac equation and klein paradox
if we confine to one dimension, we only need one alpha matrix,...

Sep1310 11:44 AM
xepma

6 
4,213 
A new quantization method for relativistic fields has been recently proposed. Compact time naturally reproduces ...

Sep1310 11:01 AM
naturale

63 
6,963 
i am new to relativistic quantum mechanics
i am always puzzled by the magic trick of raising and lowering indices
...

Sep1310 09:23 AM
wdlang

0 
874 
Hi,
I'm working my way through Schwinger's paper (link) and I came across the following identity
(\gamma\pi)^2...

Sep1310 03:03 AM
maverick280857

1 
697 
hello,
can we say that identical particles in atoms like electrons are entangled since their total wavefunction is...

Sep1210 09:31 PM
AndersonMD

2 
1,057 
I am confused about the order of operations with kets, as well as when one can permute the order of the kets.
...

Sep1210 03:47 PM
Fredrik

5 
1,258 
May someone explain to me what a covariant theory is in relation to Dirac's theory of the motion of an electron?

Sep1210 02:58 PM
Mark Shawa

0 
538 
The vacuum polarization result in QED seems to always be written in a "QED form". I would be interested in seeing it...

Sep1210 11:19 AM
ApplePion

5 
1,112 
Is it possible for heat to transfer from a colder atom (slower moving) to a hotter atom (faster moving)
I know that...

Sep1210 10:58 AM
Dr Lotso'watts

1 
759 
I was just wondering because it seems there is a contradiction in qm. If a quantum state can only be represented by an...

Sep1210 04:14 AM
PTM19

32 
3,583 
What is a field in quantum mechanics (not the classical version)? And when it is said that an electron is an...

Sep1210 03:27 AM
tom.stoer

5 
1,120 
What is meant when writing a "oneket" like this 1> ?

Sep1110 10:15 AM
DevilsAvocado

5 
853 
Hello
I saw someplace that if H is written in the total AM base as a function of S^2 and Sz then it's diagonal in...

Sep1110 08:53 AM
Cosmossos

2 
985 
I'd like to present an argument against the idea that Bell's theorem eliminates localrealistic, hiddenvariable...

Sep1110 07:57 AM
ueit

0 
789 
Hi, I am quite confused with few concepts and relations between quantum mechanics and statistical physics.
Here it...

Sep1110 04:59 AM
leoneri

3 
3,103 
Hello, I have several questions, perhaps not correctly asked, however I must get the concepts right, I'm intrigued....

Sep1110 03:43 AM
etamorphmagus

8 
1,991 
Is it really a mathematical theorem or more like a "spinstatistics postulate"?
I checked the apparent proof in...

Sep1110 02:18 AM
lsuorant

5 
3,166 
Hey, just a quick one. Anyone know of some good links to actual photo etc of matter particals?
Thanx.

Sep1010 09:28 PM
nismaratwork

26 
27,960 
Hello friends, I am a student of VLSI and have initial topics of quantum mechanics in my course work.
I am...

Sep1010 10:58 AM
nismaratwork

11 
3,287 
im puzzled by a word read as 'afagnal'. if 2 vectors(H&T) are 'afagnor' to each other, <HT>=0. i failed to google it...

Sep1010 07:38 AM
cheungyl

2 
683 
I'm watching a series of lectures on QM and the last one dealt with entaglement. You can see it here if you want. I...

Sep910 09:18 PM
Feldoh

1 
827 
Hi,please help me these questions:
I expect that multiparticle wave coincident with quantum field if we ignore the...

Sep910 08:51 PM
ndung200790

0 
639 
Hello, I have some questions, but I'm not posting on quantum mechanics because as written in the FAQ, waveparticle...

Sep910 07:53 PM
etamorphmagus

8 
1,644 
for one dimensional integral \int_{0}^{\infty}dxf(x) i know how to make minimal substraction however for an integral...

Sep910 04:24 PM
mathman

3 
1,019 