hodop smith's user avatar
hodop smith's user avatar
hodop smith's user avatar
hodop smith
  • Member for 4 years, 8 months
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5 votes
2 answers
4k views

Spin-1 polarization vectors (massive particle)

5 votes
4 answers
612 views

Deriving Klein-Gordon from Hamilton's equations for fields using functional derivatives

4 votes
1 answer
435 views

Running of the fine structure constant: meaning of $\alpha(Q^2=0)$?

3 votes
1 answer
102 views

Schrodinger equation subject to boundary condition implies quantization

3 votes
2 answers
596 views

Rotation matrices in Schwinger's oscillator model of angular momentum

3 votes
1 answer
419 views

Vacuum energy of a free scalar field from path integral

2 votes
0 answers
211 views

Question about Green's functions in QFT

2 votes
1 answer
294 views

Propagator as a Green's function in non-relativistic QM

2 votes
1 answer
233 views

AdS$_4$ and $\mathbb{H}^4$: What is the difference between them?

1 vote
2 answers
215 views

What is local about the hidden variable in Bell's theorem?

1 vote
0 answers
118 views

Angular momentum operator: converting derivatives to spherical polar [closed]

1 vote
1 answer
79 views

Quantum Time Crystals

1 vote
1 answer
185 views

Change of basis: incomplete and overcomplete bases?

1 vote
2 answers
112 views

Complex phase of the path integral in QM?

1 vote
2 answers
212 views

Tangent vectors as equivalence classes of curves

1 vote
1 answer
612 views

Approximation for the square of a Dirac delta function

1 vote
1 answer
297 views

Sakurai's approach to $\hat p$ as the generator of translations

1 vote
2 answers
321 views

Writing the metric of 4D de Sitter space as a 5D metric

1 vote
1 answer
480 views

Operator on infinite dimensional Hilbert space: domain and range

1 vote
1 answer
124 views

Quantum measurements: Eigenvalue equations and projection equations

1 vote
1 answer
255 views

Restoring double slit interference by disconnecting the recording device

1 vote
1 answer
129 views

Expanding an interacting field theory in its coupling parameter

1 vote
2 answers
295 views

Notations related to identities for spinors in the rest frame

1 vote
1 answer
183 views

Fermionic vacuum energy from Hamiltonian

1 vote
1 answer
89 views

Foucault pendulum: diagnosing experimental systematics

1 vote
0 answers
89 views

How to integrate the free field generator?

1 vote
1 answer
172 views

Showing invariance of tensor trace under $\rm SO(N)$

1 vote
1 answer
274 views

Foucault pendulum equations of motion

1 vote
1 answer
305 views

What does it mean for two groups to be locally isomorphic? [closed]

1 vote
1 answer
823 views

Trace of the log of a matrix