User AndreaPaco

13 votes

1 answer

1k views

A pendulum in a superfluid

asked Oct 9, 2022 at 22:59

8 votes

2 answers

501 views

When is the ergodic hypothesis reasonable?

asked Jul 4, 2018 at 14:25

7 votes

2 answers

344 views

Energy levels of a translating quantum harmonic oscillator

asked Mar 1 at 1:01

6 votes

2 answers

2k views

Fermion operators: why $\rm SU(2)$ symmetry and not $\rm U(2)$ symmetry?

asked Mar 5, 2020 at 0:58

6 votes

1 answer

7k views

What information does the Von Neumann entropy give for mixed states?

asked Dec 14, 2017 at 20:59

5 votes

2 answers

1k views

Electrostatic in 2D: dimensional analysis

asked Apr 13, 2019 at 9:14

5 votes

1 answer

113 views

Are there charge fluctuations in band insulators?

asked Mar 30, 2022 at 19:45

4 votes

1 answer

174 views

Is a vortex crystal a supersolid?

asked Aug 31, 2021 at 9:38

4 votes

2 answers

749 views

Equivalence of two Lagrangians

asked May 7, 2020 at 12:08

4 votes

2 answers

2k views

Symmetries in the Hubbard model

asked Feb 7, 2020 at 9:51

4 votes

1 answer

1k views

Symmetry breaking and Superfluid - Mott Insulator transition

asked Feb 11, 2017 at 17:40

2 votes

1 answer

634 views

Change of reference frame for a wavefunction: same modulus but different currents?

asked Jun 22, 2019 at 21:46

2 votes

1 answer

242 views

Apparent emergence of conserved quantities in non-integrable systems

asked Jul 5, 2018 at 13:59

2 votes

1 answer

1k views

Physical meaning of the Casimir operators of Poincarè algebra

asked Oct 15, 2018 at 10:28

2 votes

1 answer

179 views

Entanglement between what?

asked Feb 14, 2020 at 1:02

2 votes

1 answer

350 views

Reference-frame transformation for the Lagrangian of a charged particle

asked Feb 28, 2020 at 19:05

2 votes

0 answers

122 views

Is the Andreev-Bashkin effect a beyond-mean-field effect?

asked Nov 9, 2019 at 10:21

2 votes

0 answers

51 views

Equivalence between rotation and magnetic flux in lattice models

asked Jul 30, 2020 at 22:02

1 vote

0 answers

55 views

Sound emission in a box smaller than the wavelength

asked Jul 25, 2023 at 13:45

1 vote

0 answers

48 views

Two-body problem + shield

asked Oct 17, 2023 at 0:24

1 vote

1 answer

398 views

Time-dependent Canonical transformation

asked Jun 21, 2017 at 10:44

1 vote

1 answer

281 views

Eigenfrequencies of an Hamiltonian dynamical system in different bases

asked Mar 23, 2020 at 11:17

1 vote

1 answer

158 views

How to build a many-body state starting from single-particle states? [closed]

asked Apr 8, 2020 at 8:46

1 vote

2 answers

287 views

How to quantify the mixing of two hard-spheres gases?

asked Oct 16, 2018 at 8:13

1 vote

1 answer

54 views

Rotation of a rigid body within another orbiting body [closed]

asked Jun 27, 2019 at 8:29

1 vote

0 answers

36 views

Critical temperature of Bose-Einstein condensation [duplicate]

asked Oct 25, 2019 at 9:27

1 vote

1 answer

5k views

Thermal average, thermal fluctuations

asked Mar 5, 2016 at 16:48

0 votes

1 answer

212 views

Can a Hamiltonian be the difference of two Hamiltonians?

asked Nov 25, 2016 at 11:05

0 votes

1 answer

2k views

First Brillouin zone of a 1D ring

asked May 8, 2017 at 15:32

0 votes

1 answer

131 views

Negative eigenfrequencies and conserved quantities

asked Mar 26, 2018 at 16:22

Stack Exchange Network

36 Questions

A pendulum in a superfluid

When is the ergodic hypothesis reasonable?

Energy levels of a translating quantum harmonic oscillator

Fermion operators: why $\rm SU(2)$ symmetry and not $\rm U(2)$ symmetry?

What information does the Von Neumann entropy give for mixed states?

Electrostatic in 2D: dimensional analysis

Are there charge fluctuations in band insulators?

Is a vortex crystal a supersolid?

Equivalence of two Lagrangians

Symmetries in the Hubbard model

Symmetry breaking and Superfluid - Mott Insulator transition

Change of reference frame for a wavefunction: same modulus but different currents?

Apparent emergence of conserved quantities in non-integrable systems

Physical meaning of the Casimir operators of Poincarè algebra

Entanglement between what?

Reference-frame transformation for the Lagrangian of a charged particle

Is the Andreev-Bashkin effect a beyond-mean-field effect?

Equivalence between rotation and magnetic flux in lattice models

Sound emission in a box smaller than the wavelength

Two-body problem + shield

Time-dependent Canonical transformation

Eigenfrequencies of an Hamiltonian dynamical system in different bases

How to build a many-body state starting from single-particle states? [closed]

How to quantify the mixing of two hard-spheres gases?

Rotation of a rigid body within another orbiting body [closed]

Critical temperature of Bose-Einstein condensation [duplicate]

Thermal average, thermal fluctuations

Can a Hamiltonian be the difference of two Hamiltonians?

First Brillouin zone of a 1D ring

Negative eigenfrequencies and conserved quantities