Non-Hermiticity Induced Universal Anomalies in Kondo Conductance
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866912936672362496 |
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| author | Yi, Wei-Zhu Chen, Yun Pang, Jun-Jun Chen, Hong Wang, Baigeng Wang, Rui |
| author_facet | Yi, Wei-Zhu Chen, Yun Pang, Jun-Jun Chen, Hong Wang, Baigeng Wang, Rui |
| contents | Strong correlation, when combined with dissipation in open systems, can lead to a variety of exotic quantum phenomena. Here, we study nontrivial interplays between non-Fermi liquid behaviors emerging from strong correlation and non-Hermiticity arising from open systems. We propose a practical physical setup that realizes a non-Hermitian multichannel Kondo model. We identify a weak-coupling local moment fixed point and a strong-coupling non-Fermi liquid fixed point under PT symmetry, both are enriched by the non-Hermitian effect. Remarkably, universal unconventional Kondo conductance behaviors are found for both cases, which are distinct from all previously studied Kondo systems. Particularly, we show that an anomalous upturn of conductance could take place with increasing the temperature, originating from the interplay between non-Fermi liquid and non-Hermiticity. Our results identify a novel class of transport phenomena unrecognized before, driven by intertwined effects of correlation and dissipation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_13803 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Non-Hermiticity Induced Universal Anomalies in Kondo Conductance Yi, Wei-Zhu Chen, Yun Pang, Jun-Jun Chen, Hong Wang, Baigeng Wang, Rui Strongly Correlated Electrons Strong correlation, when combined with dissipation in open systems, can lead to a variety of exotic quantum phenomena. Here, we study nontrivial interplays between non-Fermi liquid behaviors emerging from strong correlation and non-Hermiticity arising from open systems. We propose a practical physical setup that realizes a non-Hermitian multichannel Kondo model. We identify a weak-coupling local moment fixed point and a strong-coupling non-Fermi liquid fixed point under PT symmetry, both are enriched by the non-Hermitian effect. Remarkably, universal unconventional Kondo conductance behaviors are found for both cases, which are distinct from all previously studied Kondo systems. Particularly, we show that an anomalous upturn of conductance could take place with increasing the temperature, originating from the interplay between non-Fermi liquid and non-Hermiticity. Our results identify a novel class of transport phenomena unrecognized before, driven by intertwined effects of correlation and dissipation. |
| title | Non-Hermiticity Induced Universal Anomalies in Kondo Conductance |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2602.13803 |