Search found 1 match
- 27 Jan 2026, 18:50
- Forum: HowTos and FAQ for TeNPy
- Topic: iDMRG shows poor convergence in the 1/3 FCI phase of Fermionic Haldane Model
- Replies: 6
- Views: 181311
Re: iDMRG shows poor convergence in the 1/3 FCI phase of Fermionic Haldane Model
I think the example python script on the TeNPy homepage (https://tenpy.readthedocs.io/en/latest/examples/chern_insulators/haldane_FCI.html) has the wrong sign of t2. The sign of t2 has to be positive, in that version it is negative which leads to the upper instead of the lower band being flat. In th...