All Questions
4
questions
4
votes
1
answer
263
views
Does the projected spin state of the $d+id$ mean-field Hamiltonian on a triangular lattice has time-reversal(TR) symmetry?
Consider the following $d+id$ mean-field Hamiltonian for a spin-1/2 model on a triangular lattice
$$H=\sum_{<ij>}(\psi_i^\dagger\chi_{ij}\psi_j+H.c.)$$, with $\chi_{ij}=\begin{pmatrix}
0 & \...
- 3,744
1
vote
0
answers
92
views
Some question on the definition of flux in the projective construction?
Here I have some confusing points about the definition of flux in the projective construction. For example, consider the same mean-field Hamiltonian in my previous question, and assume the $2\times 2$ ...
- 3,744
2
votes
0
answers
248
views
Some questions on the Wilson loop in the projective construction?
Based on the previous question and the comment in it, imagine two different mean-field Hamiltonians $H=\sum(\psi_i^\dagger\chi_{ij}\psi_j+H.c.)$ and $H'=\sum(\psi_i^\dagger\chi_{ij}'\psi_j+H.c.)$, we ...
- 3,744
3
votes
0
answers
227
views
Is the $SU(2)$ flux defined in the context of Projective Symmetry Group(PSG) an observable quantity?
The $SU(2)$ flux defined in the context of PSG is as follows:
Consider the mean-field Hamiltonian $H_{MF}=\sum(\psi_i^\dagger\chi_{ij}\psi_j+H.c.)$ description of a 2D lattice spin-model, the ...
- 3,744