Zachary
  • Member for 2 years, 11 months
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1 answers
2 votes
249 views
Completeness relation of spherical harmonics
1 answers
2 votes
2k views
1 bookmarks
Lagrange equations in a conservative system, understanding $\nabla_i$
1 answers
2 votes
66 views
Constraints and time derivative
2 answers
2 votes
201 views
Classical Mechanics: work
1 answers
1 votes
320 views
1 bookmarks
Probability of finding certain value of the $z$-component of the angular momentum when the wave function contains multiple $l$-values
1 answers
1 votes
72 views
Existence of $(\tilde{V},\mathbf{\tilde{A}})$ for each $(V,\mathbf{A})$ that gives rise to the same EM-fields
0 answers
1 votes
125 views
Matrix representation of position operator in terms of Hamiltionian eigenfunctions
0 answers
0 votes
34 views
Ground state degeneracy of $\hat{H}= \sum_{i=1}^{L-1} \mathbf{\hat{S}}_i\cdot \mathbf{\hat{S}}_{i+1}$, given a possible ground state
1 answers
0 votes
488 views
Addition of three angular momenta
1 answers
0 votes
47 views
Anti-commutator of Dirac matrices
1 answers
0 votes
135 views
Probabilities to find $\psi$ in the different eigenstates of $\hat{L}_z$: how to handle the $r$-dependence?
0 answers
0 votes
27 views
Measurement after entanglement: eigenvalue confusion
1 answers
0 votes
104 views
2 bookmarks
QM: possible values of energy and their probabilities
1 answers
0 votes
74 views
Directional cosines and rigid bodies
2 answers
-1 votes
60 views
Relativity: moving space shuttles