Quasi-Nambu-Goldstone modes in many-body scar models
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866911593236791296 |
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| author | Ren, Jie Wang, Yu-Peng Fang, Chen |
| author_facet | Ren, Jie Wang, Yu-Peng Fang, Chen |
| contents | From the quasisymmetry-group perspective [Phys. Rev. Lett. 126, 120604 (2021)], we show the universal existence of collective, coherent modes of excitations in many-body scar models in the degenerate limit, where the energy spacing in the scar tower vanishes. The number of these modes, as well as the quantum numbers carried by them, are given, not by the symmetry of the Hamiltonian, but by the quasisymmetry of the scar tower: hence the name quasi-Nambu-Goldstone modes. Based on this, we draw a concrete analogy between the paradigm of spontaneous symmetry breaking and the many-body scar physics in the degenerate limit. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2405_00785 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quasi-Nambu-Goldstone modes in many-body scar models Ren, Jie Wang, Yu-Peng Fang, Chen Strongly Correlated Electrons Quantum Physics From the quasisymmetry-group perspective [Phys. Rev. Lett. 126, 120604 (2021)], we show the universal existence of collective, coherent modes of excitations in many-body scar models in the degenerate limit, where the energy spacing in the scar tower vanishes. The number of these modes, as well as the quantum numbers carried by them, are given, not by the symmetry of the Hamiltonian, but by the quasisymmetry of the scar tower: hence the name quasi-Nambu-Goldstone modes. Based on this, we draw a concrete analogy between the paradigm of spontaneous symmetry breaking and the many-body scar physics in the degenerate limit. |
| title | Quasi-Nambu-Goldstone modes in many-body scar models |
| topic | Strongly Correlated Electrons Quantum Physics |
| url | https://arxiv.org/abs/2405.00785 |