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pll04
  • Member for 2 years, 9 months
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4 votes
1 answer
674 views

Why does the Dyson series have a 1/n! factor?

2 votes
1 answer
696 views

Derivation of longitudinal wave in a solid rod

2 votes
2 answers
647 views

Proof of principle of stationary action when the Lagrangian is not $L=T-V$

2 votes
2 answers
502 views

Difference between stable manifold and basin of attraction?

2 votes
1 answer
179 views

Why do the wavefunction wavenumbers for a box and for a periodic potential differ?

1 vote
1 answer
34 views

Does the anticommutator of two spinors affect the transpose of their product?

1 vote
0 answers
51 views

Why is the canonical momentum operator for a charged particle not observable in an E&M background?

1 vote
1 answer
517 views

Time evolution of operators in the Heisenberg picture

1 vote
1 answer
115 views

Energy increase due to the Zeeman effect

1 vote
3 answers
538 views

Difference between upper and lower indices in Einstein notation

1 vote
1 answer
118 views

Proof that Bjorken-$x$ is positive

0 votes
0 answers
25 views

Do operators commute if they depend on the same operator? [duplicate]

0 votes
1 answer
143 views

Statistical proof of the principle of least action

0 votes
1 answer
567 views

Proof of the generalised uncertainty principle

0 votes
2 answers
55 views

Exponential expression of controlled unitary gate

0 votes
0 answers
33 views

Proof that commuting Dirac fields violate causality

0 votes
1 answer
144 views

Connection between Laplace's equation and hydrogenic electron Schrodinger equation

0 votes
0 answers
53 views

Measure-preserving vs. non-dissipative vs. Hamiltonian systems

0 votes
2 answers
760 views

Are non-degenerate eigenfunctions orthogonal? [duplicate]

0 votes
2 answers
93 views

Symmetry of the second partial derivatives of the Hamiltonian

-2 votes
1 answer
52 views

Relation of two commuting operators to other operators