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Non-Hermitian many-body localization in asymmetric chains with long-range interaction |
| Wen Wang(王雯)1,†, Han-Ze Li(李函泽)1,†, and Jian-Xin Zhong(钟建新)1,2,‡ |
1 Institute for Quantum Science and Technology, Shanghai University, Shanghai 200444, China;
2 School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, China |
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Abstract Understanding the relationship between many-body localization and spectra in non-Hermitian many-body systems is crucial. In a one-dimensional clean, long-range interaction-induced non-Hermitian many-body localization system, we have discovered the coexistence of static and dynamic spectral real-complex phase transitions, along with many-body ergodic-localized phase transitions. The phase diagrams of these two types of transitions show similar non-monotonic boundary trends but do not overlap, highlighting properties distinct from conventional disorder-induced non-Hermitian many-body localization. We also propose a potential experimental realization of this model in cold-atom systems. Our findings provide valuable insights for further understanding the relationship between non-Hermitian many-body localization and non-Hermitian spectra in long-range interacting systems.
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Received: 26 May 2025
Revised: 05 October 2025
Accepted manuscript online: 17 October 2025
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PACS:
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05.30.Rt
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(Quantum phase transitions)
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02.70.Hm
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(Spectral methods)
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03.65.Yz
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(Decoherence; open systems; quantum statistical methods)
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05.70.Ln
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(Nonequilibrium and irreversible thermodynamics)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 12374046) and the Shanghai Science and Technology Innovation Action Plan (Grant No. 24LZ1400800). |
Corresponding Authors:
Jian-Xin Zhong
E-mail: jxzhong@shu.edu.cn
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Cite this article:
Wen Wang(王雯), Han-Ze Li(李函泽), and Jian-Xin Zhong(钟建新) Non-Hermitian many-body localization in asymmetric chains with long-range interaction 2026 Chin. Phys. B 35 060509
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