Parity order as a fundamental driver of bosonic topology
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866908768499924992 |
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| author | Padhan, Ashirbad Nigam, Harsh |
| author_facet | Padhan, Ashirbad Nigam, Harsh |
| contents | Symmetry-protected topological (SPT) phases in interacting bosonic systems have been widely explored, yet most realizations rely on fine-tuned interactions or enlarged symmetries. Here we show that a qualitatively simpler mechanism--parity order coupled to bond dimerization--acts as a fundamental driver of bosonic topology. Using density matrix renormalization group simulations, we identify two distinct topological phases absent in the purely dimerized model: an SPT phase at half filling stabilized by positive parity coupling, and a topological phase at unit filling stabilized by negative coupling that can be adiabatically connected to a trivial phase without breaking any symmetry. Our results establish parity order as a new organizing principle for correlation-driven bosonic topology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_25011 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Parity order as a fundamental driver of bosonic topology Padhan, Ashirbad Nigam, Harsh Strongly Correlated Electrons Quantum Gases Statistical Mechanics Quantum Physics Symmetry-protected topological (SPT) phases in interacting bosonic systems have been widely explored, yet most realizations rely on fine-tuned interactions or enlarged symmetries. Here we show that a qualitatively simpler mechanism--parity order coupled to bond dimerization--acts as a fundamental driver of bosonic topology. Using density matrix renormalization group simulations, we identify two distinct topological phases absent in the purely dimerized model: an SPT phase at half filling stabilized by positive parity coupling, and a topological phase at unit filling stabilized by negative coupling that can be adiabatically connected to a trivial phase without breaking any symmetry. Our results establish parity order as a new organizing principle for correlation-driven bosonic topology. |
| title | Parity order as a fundamental driver of bosonic topology |
| topic | Strongly Correlated Electrons Quantum Gases Statistical Mechanics Quantum Physics |
| url | https://arxiv.org/abs/2512.25011 |