User KF Gauss

22 votes

1 answer

770 views

Does the Mott insulator exist?

asked Apr 5, 2020 at 15:39

20 votes

2 answers

714 views

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

asked Sep 27, 2020 at 6:01

19 votes

6 answers

2k views

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

asked Aug 27, 2014 at 5:34

16 votes

2 answers

4k views

Interpreting the Quantum Fisher Information

asked Aug 17, 2016 at 15:53

16 votes

1 answer

2k views

Group Theory of Superconducting Order Parameters?

asked Feb 8, 2020 at 6:21

14 votes

2 answers

3k views

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

asked Jan 25, 2018 at 21:18

11 votes

0 answers

160 views

Is there an AC version of the Quantum Hall Effect?

asked Mar 12, 2020 at 6:08

11 votes

3 answers

475 views

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

asked Oct 22, 2020 at 8:37

10 votes

0 answers

438 views

Fourier transform of almost-periodic lattice?

asked Dec 20, 2019 at 13:48

10 votes

2 answers

5k views

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

asked Apr 8, 2017 at 9:44

7 votes

4 answers

825 views

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

asked Nov 6, 2019 at 2:09

7 votes

1 answer

261 views

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

asked Jun 19 at 7:37

6 votes

3 answers

3k views

How are "cold sparks" possible?

asked Sep 6, 2021 at 7:40

6 votes

1 answer

245 views

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

asked Oct 26, 2022 at 4:23

6 votes

3 answers

1k views

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

asked May 12, 2018 at 7:31

5 votes

1 answer

519 views

Understanding the Plasmon dispersion relation to first approximation

asked Feb 10, 2018 at 17:10

5 votes

1 answer

346 views

Are there experimental signatures unique to Mott insulators?

asked Mar 9, 2018 at 22:58

5 votes

2 answers

2k views

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

asked Jan 2, 2019 at 11:51

5 votes

2 answers

1k views

Conservation of charge and method of images

asked Dec 9, 2012 at 11:15

5 votes

1 answer

823 views

Why do we ever use the Dyson series?

asked Nov 11, 2022 at 0:56

5 votes

1 answer

260 views

Building intuition for the AC Stark shift

asked May 17 at 13:13

5 votes

3 answers

231 views

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

asked Oct 21, 2021 at 21:33

5 votes

3 answers

119 views

Why do antiferromagnets occur at lower temperature than ferromagnets?

asked Mar 26, 2020 at 4:45

5 votes

3 answers

297 views

Can inelastic scattering still give rise to diffraction?

asked Nov 10, 2020 at 21:45

5 votes

2 answers

551 views

Neat expression for the dipole potential in Fourier space?

asked Jun 5, 2020 at 8:00

5 votes

1 answer

167 views

What is stopping optical clocks from redefining the second?

asked Jul 6 at 0:45

5 votes

0 answers

96 views

Ergodicity in "unphysical" parts of Hilbert space

asked Jul 8 at 20:44

4 votes

3 answers

542 views

Why doesn't broken inversion symmetry imply piezoelectricity?

asked Jun 21, 2022 at 7:30

3 votes

1 answer

191 views

Image charge inside dielectric with complex permittivity?

asked Aug 18, 2021 at 9:25

3 votes

0 answers

118 views

Implement Adiabatic Elimination on Hamiltonians?

asked Jul 25 at 19:10

Stack Exchange Network

61 Questions

Does the Mott insulator exist?

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

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

Interpreting the Quantum Fisher Information

Group Theory of Superconducting Order Parameters?

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

Is there an AC version of the Quantum Hall Effect?

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

Fourier transform of almost-periodic lattice?

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

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

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

How are "cold sparks" possible?

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

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

Understanding the Plasmon dispersion relation to first approximation

Are there experimental signatures unique to Mott insulators?

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

Conservation of charge and method of images

Why do we ever use the Dyson series?

Building intuition for the AC Stark shift

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

Why do antiferromagnets occur at lower temperature than ferromagnets?

Can inelastic scattering still give rise to diffraction?

Neat expression for the dipole potential in Fourier space?

What is stopping optical clocks from redefining the second?

Ergodicity in "unphysical" parts of Hilbert space

Why doesn't broken inversion symmetry imply piezoelectricity?

Image charge inside dielectric with complex permittivity?

Implement Adiabatic Elimination on Hamiltonians?