Emergent Weyl Nodes and Berry Curvature in Bose Polarons via $p$-Wave Feshbach Coupling
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866914437270601728 |
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| author | Tajima, Hiroyuki Nakano, Eiji Iida, Kei |
| author_facet | Tajima, Hiroyuki Nakano, Eiji Iida, Kei |
| contents | We show that an impurity quasiparticle immersed in a Bose-Einstein condensate, known as a Bose polaron, exhibits topological properties characterized by a nonzero Berry curvature, which is induced by Weyl nodes that emerge via interspecies $p$-wave Feshbach resonance. Such nodes occur even in the absence of spin degrees of freedom and spin-orbit coupling. For charged impurities, the corresponding $p$-wave polarons are shown to be accompanied by chiral anomaly. The above predictions can be tested in a cold atomic environment by observing the Hall transport of the atomic or ionic impurity cloud. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2604_00797 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Emergent Weyl Nodes and Berry Curvature in Bose Polarons via $p$-Wave Feshbach Coupling Tajima, Hiroyuki Nakano, Eiji Iida, Kei Quantum Gases Mesoscale and Nanoscale Physics Strongly Correlated Electrons High Energy Physics - Theory Nuclear Theory We show that an impurity quasiparticle immersed in a Bose-Einstein condensate, known as a Bose polaron, exhibits topological properties characterized by a nonzero Berry curvature, which is induced by Weyl nodes that emerge via interspecies $p$-wave Feshbach resonance. Such nodes occur even in the absence of spin degrees of freedom and spin-orbit coupling. For charged impurities, the corresponding $p$-wave polarons are shown to be accompanied by chiral anomaly. The above predictions can be tested in a cold atomic environment by observing the Hall transport of the atomic or ionic impurity cloud. |
| title | Emergent Weyl Nodes and Berry Curvature in Bose Polarons via $p$-Wave Feshbach Coupling |
| topic | Quantum Gases Mesoscale and Nanoscale Physics Strongly Correlated Electrons High Energy Physics - Theory Nuclear Theory |
| url | https://arxiv.org/abs/2604.00797 |