User suncup224

9 votes

2 answers

2k views

Density matrix: error with diagonalization claim and fixing it

asked Nov 19, 2014 at 18:46

8 votes

2 answers

2k views

Ground state of Spherical symmetric potential always have $\ell=0$?

asked Nov 14, 2014 at 19:45

7 votes

2 answers

3k views

Why is this not a violation of parity invarance for EM

asked Jun 9, 2014 at 1:45

7 votes

1 answer

424 views

When does Quantum Mechanics Measurement lead to Mixed State

asked Dec 1, 2016 at 7:41

5 votes

1 answer

1k views

Decay of spin-1/2 particle into two spin-1/2 particles

asked Oct 20, 2019 at 5:29

4 votes

2 answers

860 views

Two sets of coordinates each in frames $O$ and $ O' $ (Lorentz transformation)

asked Aug 17, 2015 at 3:53

3 votes

2 answers

247 views

Two explanations of non-zero atomic radius

asked May 22, 2014 at 1:46

3 votes

1 answer

2k views

What is meant by Proton Structure Function?

asked Jun 11, 2014 at 6:36

3 votes

1 answer

119 views

Interplay of energy between photon, electronic energy levels and kinetic energy

asked Mar 29, 2020 at 6:22

2 votes

1 answer

290 views

Estimate bound state energy for shallow finite well

asked May 21, 2019 at 14:23

2 votes

1 answer

483 views

Feynman-Hellmann theorem problem in Griffiths - somewhat inaccurate?

asked Nov 22, 2019 at 13:34

2 votes

1 answer

347 views

Wavefunction at origin and derivative of potential

asked Nov 24, 2019 at 3:59

2 votes

0 answers

204 views

Scattering of two particles - phase factor

asked May 24, 2014 at 1:23

1 vote

0 answers

38 views

Are states from an unpolarized source beam distinguishable or not

asked May 27, 2014 at 1:19

1 vote

1 answer

97 views

Collapse of quantum state upon measurement - why not some other unit scalar multiple

asked Jun 1, 2014 at 7:31

1 vote

0 answers

36 views

Shape of the universe [duplicate]

asked Aug 26, 2015 at 2:11

1 vote

1 answer

79 views

Photon outside of Hubble sphere from perspective of comoving frame

asked Jan 3, 2016 at 11:47

1 vote

1 answer

168 views

Must my gauge transformation be defined on all space?

asked Jan 29, 2020 at 12:55

1 vote

1 answer

207 views

Does wavelength-specific emissivity depend on temperature?

asked Feb 5, 2020 at 6:27

1 vote

1 answer

353 views

Hydrostatic balance in light of temperature changes

asked Mar 1, 2020 at 12:41

1 vote

2 answers

782 views

Two masses connected by vertical rod is displaced

asked Sep 16, 2017 at 5:53

1 vote

1 answer

307 views

Canonical momentum not observable vs energy is observable

asked Jul 11, 2021 at 4:11

0 votes

1 answer

155 views

Crystal diffraction for waves vs particles

asked May 23, 2014 at 0:52

Stack Exchange Network

23 Questions

Density matrix: error with diagonalization claim and fixing it

Ground state of Spherical symmetric potential always have $\ell=0$?

Why is this not a violation of parity invarance for EM

When does Quantum Mechanics Measurement lead to Mixed State

Decay of spin-1/2 particle into two spin-1/2 particles

Two sets of coordinates each in frames $O$ and $ O' $ (Lorentz transformation)

Two explanations of non-zero atomic radius

What is meant by Proton Structure Function?

Interplay of energy between photon, electronic energy levels and kinetic energy

Estimate bound state energy for shallow finite well

Feynman-Hellmann theorem problem in Griffiths - somewhat inaccurate?

Wavefunction at origin and derivative of potential

Scattering of two particles - phase factor

Are states from an unpolarized source beam distinguishable or not

Collapse of quantum state upon measurement - why not some other unit scalar multiple

Shape of the universe [duplicate]

Photon outside of Hubble sphere from perspective of comoving frame

Must my gauge transformation be defined on all space?

Does wavelength-specific emissivity depend on temperature?

Hydrostatic balance in light of temperature changes

Two masses connected by vertical rod is displaced

Canonical momentum not observable vs energy is observable

Crystal diffraction for waves vs particles