Phases and criticality of the triangular lattice SU(N) Hofstadter-Hubbard model
Abstract
We report the study of phases and transitions of SU(N) Hofstadter-Hubbard model subject to commensurate magnetic field on the triangular lattice. At filling one fermion per site, for the number of fermion flavors 2 <= N <= 8, we identify three distinct phases and calculate critical interaction strength from parton large-N mean-field approximation. Integer quantum Hall, chiral spin liquid, and valence bond solid states could be realized upon varying the Hubbard interaction U and the number of flavor N . We construct the critical theory for the putative continuous transition from quantum Hall states to chiral spin liquid and calculate the critical transport behavior using quantum Boltzmann equations for general N . These results could be validated in synthetic systems such as moire superlattices and cold atom platforms.
Keywords
Cite
@article{arxiv.2502.10023,
title = {Phases and criticality of the triangular lattice SU(N) Hofstadter-Hubbard model},
author = {Lu Zhang and Rongning Liu and Xue-Yang Song},
journal= {arXiv preprint arXiv:2502.10023},
year = {2026}
}
Comments
14 pages, 4 figures