doublefelix
  • Member for 7 years, 2 months
  • Last seen this week
  • New York, Munich
1 answers
26 votes
2k views
22 bookmarks
How does QFT predict the probability density to find a particle at x?
4 answers
16 votes
2k views
7 bookmarks
Could we make things out of newly discovered particles?
2 answers
15 votes
1k views
1 bookmarks
Are basis vectors imaginary in special relativity?
2 answers
14 votes
599 views
3 bookmarks
Can the coefficient of friction be derived from fundamentals?
4 answers
13 votes
2k views
12 bookmarks
Inconsistency with partial derivatives as basis vectors?
3 answers
11 votes
5k views
1 bookmarks
How did Rutherford's gold foil disprove the plum pudding model?
8 answers
6 votes
2k views
3 bookmarks
Could dark energy just be particles with negative mass?
1 answers
6 votes
155 views
Do potentials make sense in relativistic quantum theory?
1 answers
5 votes
285 views
2 bookmarks
Solved Gauss' Law for $\vec{E}$ without boundary conditions?
1 answers
5 votes
265 views
2 bookmarks
How was the double slit experiment predicted in theory?
3 answers
4 votes
393 views
1 bookmarks
Does a photon attract or repel matter?
1 answers
4 votes
200 views
1 bookmarks
Bell's Theorem - Why does $\lambda$ have a probability?
2 answers
4 votes
1k views
1 bookmarks
Where does the electric force come from if an electron has no definite location?
5 answers
4 votes
1k views
2 bookmarks
How do we know that time dilation applies to objects other than light?
0 answers
3 votes
65 views
Why do forces have to be mediated by bosons? (Or do they?)
3 answers
3 votes
447 views
3 bookmarks
Fields in QFT: What are the Initial Conditions, $\phi(t=0,x)$?
3 answers
2 votes
2k views
3 bookmarks
Derivation of Inverse Lorentz Transformation in Index Notation
2 answers
2 votes
65 views
When does the wave function spread over the volume of a box?
1 answers
2 votes
353 views
2 bookmarks
Why can't a Weyl Fermion have mass?
0 answers
2 votes
53 views
1 bookmarks
What does the identity operator look like in QFT, written in momentum eigenstates?
2 answers
2 votes
517 views
What is the importance of a diagonal density matrix after measurement/decoherence?
0 answers
2 votes
153 views
How to compute partial trace of $U ( \rho_A \otimes \rho_B) U^+$?
0 answers
1 votes
33 views
Is there an entangled ground state solution to the hydrogen atom? (spin neglected)
2 answers
1 votes
181 views
1 bookmarks
Is $\phi^\dagger \phi (\phi + \phi^\dagger)$ a possible interaction for scalar fields in QFT?
1 answers
1 votes
293 views
$(\psi_L^\dagger \psi_R)^\dagger \neq (\psi_R^\dagger \psi_L)^\dagger$ ? What is the transpose for spinors?
2 answers
1 votes
132 views
Why define $D_\mu = \partial_\mu -ieA_\mu$ with the electric charge $e$?
0 answers
1 votes
49 views
Physically, why don't we care about representations that differ only by a similarity transformation?
2 answers
1 votes
2k views
1 bookmarks
Why are there two different SI units of magnetic charge?
2 answers
1 votes
138 views
Time Dilation Back to Original Frame is Inconsistent?
0 answers
0 votes
49 views
1 bookmarks
Possible to have Dirac AND Majorana mass?