Magnetization-induced reordering of ground states phase diagram in a two-component Bose-Hubbard model
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866910024183316480 |
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| author | Stachowiak, Oskar Dunikowski, Hubert Witkowska, Emilia |
| author_facet | Stachowiak, Oskar Dunikowski, Hubert Witkowska, Emilia |
| contents | We investigate the influence of non-zero magnetization on the ground-state phase diagram of the two-component Bose-Hubbard model. Employing a mean-field theoretical framework, both analytically and numerically, we demonstrate that positions and sizes of specific phases on the diagram are magnetization dependent. In particular, non-zero magnetization introduces different Mott insulator phase boundaries for each of the two components. This effect leads to the emergence of a hybrid phase characterized by the coexistence of superfluid in one of the components and Mott insulator in the another one. Our findings highlight the important role of a conserved quantities, which is magnetization here, in reshaping the phase landscape, significantly influencing the stability and emergence of distinct quantum phases. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2508_06442 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magnetization-induced reordering of ground states phase diagram in a two-component Bose-Hubbard model Stachowiak, Oskar Dunikowski, Hubert Witkowska, Emilia Quantum Gases Quantum Physics We investigate the influence of non-zero magnetization on the ground-state phase diagram of the two-component Bose-Hubbard model. Employing a mean-field theoretical framework, both analytically and numerically, we demonstrate that positions and sizes of specific phases on the diagram are magnetization dependent. In particular, non-zero magnetization introduces different Mott insulator phase boundaries for each of the two components. This effect leads to the emergence of a hybrid phase characterized by the coexistence of superfluid in one of the components and Mott insulator in the another one. Our findings highlight the important role of a conserved quantities, which is magnetization here, in reshaping the phase landscape, significantly influencing the stability and emergence of distinct quantum phases. |
| title | Magnetization-induced reordering of ground states phase diagram in a two-component Bose-Hubbard model |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2508.06442 |