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KF Gauss's user avatar
KF Gauss's user avatar
KF Gauss's user avatar
KF Gauss
  • Member for 11 years, 7 months
  • Last seen this week
  • Cambridge, MA
22 votes
1 answer
915 views

Does the Mott insulator exist?

20 votes
2 answers
794 views

Is there a quantum analogue of the "Tennis Racket" theorem?

19 votes
6 answers
2k views

Is the harmonic oscillator potential unique in having equally spaced discrete energy levels?

16 votes
2 answers
4k views

Interpreting the Quantum Fisher Information

16 votes
2 answers
4k views

Why is the distinction between Mott Insulators and Charge Transfer Insulators important?

16 votes
1 answer
2k views

Group Theory of Superconducting Order Parameters?

13 votes
2 answers
6k views

Intuition behind Linked Cluster Theorem: connected vs. non-connected diagrams

11 votes
0 answers
172 views

Is there an AC version of the Quantum Hall Effect?

11 votes
3 answers
501 views

What does it mean for a phase to be unstable due to quantum fluctuations?

10 votes
0 answers
473 views

Fourier transform of almost-periodic lattice?

7 votes
1 answer
297 views

What does an actual excited eigenstate of the Hydrogen atom look like?

7 votes
6 answers
1k views

Where does the photon orbital angular momentum go in light-matter interactions?

6 votes
1 answer
561 views

Understanding the Plasmon dispersion relation to first approximation

6 votes
3 answers
1k views

Obtaining the total charge density from a multi-species many-body wavefunction

6 votes
1 answer
1k views

Building intuition for the AC Stark shift

6 votes
1 answer
251 views

What is stopping optical clocks from redefining the second?

6 votes
3 answers
3k views

How are "cold sparks" possible?

6 votes
1 answer
330 views

Evading the $J=0$ to $J'=0$ forbidden selection rule?

6 votes
1 answer
1k views

Why do we ever use the Dyson series?

5 votes
3 answers
278 views

Can the degree of entanglement be an order parameter in a phase transition?

5 votes
3 answers
128 views

Why do antiferromagnets occur at lower temperature than ferromagnets?

5 votes
2 answers
646 views

Neat expression for the dipole potential in Fourier space?

5 votes
3 answers
338 views

Can inelastic scattering still give rise to diffraction?

5 votes
0 answers
102 views

Ergodicity in "unphysical" parts of Hilbert space

5 votes
1 answer
366 views

Are there experimental signatures unique to Mott insulators?

5 votes
2 answers
2k views

Are acoustic phonons always the lowest energy vibrational modes in solids?

5 votes
2 answers
1k views

Conservation of charge and method of images

4 votes
1 answer
311 views

Validity of ignoring the diamagnetic $\mathbf{A}^2$ term in solids?

4 votes
0 answers
259 views

Implement Adiabatic Elimination on Hamiltonians?

4 votes
3 answers
743 views

Why doesn't broken inversion symmetry imply piezoelectricity?