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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2510.13045 |
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| _version_ | 1866911211017207808 |
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| author | Banerjee, Archi Zeng, Meng |
| author_facet | Banerjee, Archi Zeng, Meng |
| contents | Using bulk gapless topological superconductors in both 1d and 2d as free fermion model examples, we demonstrate the power of subsystem correlation spectrum (the spectrum of correlation matrix), or equivalently the entanglement spectrum for the case of free fermions, in characterizing the topology of the non-trivial ground state. For the systems considered, we show that signatures of the lowenergy spectrum, including both the edge modes and the bulk modes, appear in the correlation spectrum, albeit with different behaviors. This work generalizes the 2d Li-Haldane entanglement spectrum characterization of topological edge states to 2d topological systems with gapless bulk. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_13045 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Entanglement spectrum of gapless topological phases: a case study with topological superconductors Banerjee, Archi Zeng, Meng Strongly Correlated Electrons Superconductivity Quantum Physics Using bulk gapless topological superconductors in both 1d and 2d as free fermion model examples, we demonstrate the power of subsystem correlation spectrum (the spectrum of correlation matrix), or equivalently the entanglement spectrum for the case of free fermions, in characterizing the topology of the non-trivial ground state. For the systems considered, we show that signatures of the lowenergy spectrum, including both the edge modes and the bulk modes, appear in the correlation spectrum, albeit with different behaviors. This work generalizes the 2d Li-Haldane entanglement spectrum characterization of topological edge states to 2d topological systems with gapless bulk. |
| title | Entanglement spectrum of gapless topological phases: a case study with topological superconductors |
| topic | Strongly Correlated Electrons Superconductivity Quantum Physics |
| url | https://arxiv.org/abs/2510.13045 |