Partial suppression of magnetism in the square lattice SU(3) Hubbard model
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912669550772224 |
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| author | Bird, Samuel Huber, Sebastian Nys, Jannes |
| author_facet | Bird, Samuel Huber, Sebastian Nys, Jannes |
| contents | The SU(N) Hubbard model is a natural extension of the SU(2) model. However, even the N=3 case remains poorly understood. We report a substantially new ground-state phase diagram of the square lattice SU(3) Fermi-Hubbard model. Using a backflow ansatz, we identify strong signatures of a Mott transition and a subsequent magnetic transition, and the suppression of a previously predicted magnetic phase. We study the hole-doped model, identifying a transition from magnetic to paramagnetic behavior in the strong-coupling regime. Our findings offer a qualitatively new ground state picture. More broadly, our work suggests a path to study general SU(N) Hubbard models with arbitrary filling and geometry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_08073 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Partial suppression of magnetism in the square lattice SU(3) Hubbard model Bird, Samuel Huber, Sebastian Nys, Jannes Strongly Correlated Electrons Quantum Gases The SU(N) Hubbard model is a natural extension of the SU(2) model. However, even the N=3 case remains poorly understood. We report a substantially new ground-state phase diagram of the square lattice SU(3) Fermi-Hubbard model. Using a backflow ansatz, we identify strong signatures of a Mott transition and a subsequent magnetic transition, and the suppression of a previously predicted magnetic phase. We study the hole-doped model, identifying a transition from magnetic to paramagnetic behavior in the strong-coupling regime. Our findings offer a qualitatively new ground state picture. More broadly, our work suggests a path to study general SU(N) Hubbard models with arbitrary filling and geometry. |
| title | Partial suppression of magnetism in the square lattice SU(3) Hubbard model |
| topic | Strongly Correlated Electrons Quantum Gases |
| url | https://arxiv.org/abs/2507.08073 |