2 papers
cond-mat.str-el2025
Twisting the Hubbard model into the Momentum-Mixing Hatsugai-Kohmoto Model
Peizhi Mai, Jinchao Zhao, Gaurav Tenkila +4
The Hubbard model is a standard theoretical tool for studying materials with strong electron-electron interactions, such as the cuprate superconductors. Unfortunately, interaction-…
cond-mat.str-el2025
Computing the Invariant in Two-Dimensional Strongly-Correlated Systems
Sounak Sinha, Derek Y. Pan, Barry Bradlyn
We show that the two-dimensional invariant for time-reversal invariant insulators can be formulated in terms of the boundary-condition dependence of the ground state…