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17 votes
2 answers
14k views

Fermi surface nesting and CDW/SDW/SC orders

13 votes
3 answers
4k views

Questions about Thouless-Kohmoto-Nightingale-den Nijs (TKNN) paper

10 votes
1 answer
475 views

Lagrangian for Goldstone mode + topological excitation

10 votes
1 answer
1k views

Can I integrate out the fermion field that is not gapped?

8 votes
2 answers
603 views

Many faces of linear response theory

7 votes
2 answers
2k views

Why are Topological Superconductors hard to make?

7 votes
2 answers
3k views

First Chern number, monopoles and quantum Hall states

7 votes
1 answer
453 views

What is the simplest possible topological Bloch function?

7 votes
1 answer
212 views

Incoherent assumption of the parton model

6 votes
2 answers
309 views

Ricci scalar and General Relativity cartoon pictures

6 votes
1 answer
6k views

What is the Laughlin argument?

6 votes
1 answer
304 views

Logic behind topological orders

6 votes
2 answers
2k views

Can I use imaginary time propagation for many-body problems?

5 votes
1 answer
1k views

What's the difference between background field and dynamical gauge field?

5 votes
2 answers
1k views

Diagram-like perturbation theory in quantum mechanics

5 votes
1 answer
565 views

Are Hall edge currents truly dissipationless?

4 votes
0 answers
174 views

Will the photon wavelength fluctuate in the presence of a gravitational wave?

4 votes
2 answers
1k views

What happens when a bare 3d topological insulator is subject to a magnetic field?

3 votes
2 answers
666 views

Is the artificial gauge field a gauge field?

3 votes
1 answer
121 views

Human eyes vs aberrations

3 votes
2 answers
72 views

What is the minimal discrete model of wave propagations?

3 votes
2 answers
470 views

Proof of quantization of magnetic charge of monopoles using homotopy groups

2 votes
0 answers
187 views

How to put spin-1/2 Fermi sea into real space representation?

2 votes
0 answers
93 views

When does "solve and plugin" fail?

2 votes
1 answer
166 views

Crystal magnetic response only skin deep?

2 votes
1 answer
105 views

Can a SQUID perform real time measurements of a slow varying magnetic flux?

1 vote
1 answer
522 views

Is quantum Hall current density local? (${\bf j}({\bf r}) = \sigma_H {\bf \hat n \times E}({\bf r}) $)

1 vote
3 answers
212 views

How to incorporate effects of gravity in a many-electron system?

1 vote
2 answers
952 views

high spin atoms SU(2) representation

1 vote
0 answers
549 views

Why doublons and holons are not bounded in spin-1/2 Hubbard chain?