User PPR

11 votes

When can we take the Brillouin zone to be a sphere?

answered Mar 5, 2016 at 11:16

8 votes

Accepted

Why is disorder essential for the Integer Quantum Hall effect IQHE?

answered Sep 30, 2017 at 11:05

6 votes

What is the physics behind "Bulk-edge correspondence"?

answered Mar 5, 2016 at 11:30

5 votes

Accepted

What is imaginary time?

answered Jul 4, 2014 at 18:52

5 votes

Topological indices for systems that lack translational invariance

answered Nov 1, 2018 at 14:56

5 votes

Accepted

Resources for algebraic topology in condensed matter physics

answered Mar 6, 2016 at 10:11

4 votes

Accepted

How are topological invariants constructed?

answered Jul 8, 2016 at 16:37

4 votes

How to show that Chern number gives the amount of edge states?

answered May 19, 2019 at 4:05

4 votes

Functional Derivative in the Linear Sigma Model

answered Jul 9, 2014 at 7:24

3 votes

What is the nature of electric field? is it quantized? is it a wave?

answered Jun 15, 2014 at 9:15

2 votes

The relation between classical and quantum vacua

answered Jun 12, 2014 at 23:34

2 votes

Velocity and acceleration with displacement

answered Jun 13, 2014 at 0:46

2 votes

How do I choose my constants?

answered Jul 6, 2014 at 7:35

2 votes

Does Hall plateus require the existence of impurity in the sample?

answered Mar 5, 2016 at 12:11

2 votes

What makes a system topological?

answered Mar 5, 2016 at 12:35

2 votes

Accepted

Relation between topological insulators and breaking of time reversal symmetry

answered May 19, 2019 at 4:49

2 votes

Reference for topology for topological insulators

answered Aug 4, 2019 at 5:15

2 votes

Multi-instanton contribution to path integral

answered Dec 6, 2019 at 12:46

2 votes

Is the Hilbert space spanned by both bound and continuous hydrogen atom eigenfunctions?

answered May 2, 2020 at 4:22

2 votes

Accepted

Why topologically non-trivial materials are robust againist any external perturbations or defects?

answered Nov 11, 2020 at 13:21

1 vote

Accepted

Show that the density operator is positive semidefinite

answered Nov 11, 2020 at 13:01

1 vote

Accepted

Chern number for nonintracing hamiltonian while bands crossing

answered Aug 20, 2020 at 20:40

1 vote

Non-integer topological invariants

answered Mar 3, 2018 at 19:07

1 vote

How to calculate $\sigma_{xx}$ in lattice model?

answered Feb 6, 2020 at 5:47

1 vote

Pulling apart the atoms of a topological insulator

answered Aug 4, 2019 at 5:36

1 vote

Why hopping amplitude with no negative sign?

answered Aug 4, 2019 at 5:01

1 vote

How to perform stroboscopic measurements for Floquet topological insulators?

answered May 19, 2019 at 4:11

1 vote

Winding number for the Su-Schrieffer-Heeger (SSH) model

answered Aug 1, 2016 at 16:25

1 vote

What is "quantum" in topological insulators?

answered Dec 21, 2016 at 23:27

1 vote

Significance of Dirac cones in condensed matter physics

answered May 19, 2019 at 3:56

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43 Answers

When can we take the Brillouin zone to be a sphere?

Why is disorder essential for the Integer Quantum Hall effect IQHE?

What is the physics behind "Bulk-edge correspondence"?

What is imaginary time?

Topological indices for systems that lack translational invariance

Resources for algebraic topology in condensed matter physics

How are topological invariants constructed?

How to show that Chern number gives the amount of edge states?

Functional Derivative in the Linear Sigma Model

What is the nature of electric field? is it quantized? is it a wave?

The relation between classical and quantum vacua

Velocity and acceleration with displacement

How do I choose my constants?

Does Hall plateus require the existence of impurity in the sample?

What makes a system topological?

Relation between topological insulators and breaking of time reversal symmetry

Reference for topology for topological insulators

Multi-instanton contribution to path integral

Is the Hilbert space spanned by both bound and continuous hydrogen atom eigenfunctions?

Why topologically non-trivial materials are robust againist any external perturbations or defects?

Show that the density operator is positive semidefinite

Chern number for nonintracing hamiltonian while bands crossing

Non-integer topological invariants

How to calculate $\sigma_{xx}$ in lattice model?

Pulling apart the atoms of a topological insulator

Why hopping amplitude with no negative sign?

How to perform stroboscopic measurements for Floquet topological insulators?

Winding number for the Su-Schrieffer-Heeger (SSH) model

What is "quantum" in topological insulators?

Significance of Dirac cones in condensed matter physics