Supersymmetry-like tunneling current noise as a probe of Goldstino excitation in a Bose-Fermi mixture
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arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866910793853829120 |
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| author | Zhang, Tingyu |
| author_facet | Zhang, Tingyu |
| contents | The Goldstino, which is a fermionic Nambu-Goldstone mode, has been predicted in a Bose-Fermi mixture when the supersymmetry is broken. To detect this excitation mode, we theoretically investigate the shot noise of the supersymmetry-like tunneling current in a weakly interacting ultracold Bose-Fermi mixture. The Fano factor, which is defined by the noise-to-current ratio, reflect the elementary carriers of the tunneling process. The change of the Fano factor microscopically as the density changes evinces a crossover from the quasiparticle transport to multiparticle (Goldstino) transport. The tunneling channel can also be changed by tuning the potential barrier. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_20794 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Supersymmetry-like tunneling current noise as a probe of Goldstino excitation in a Bose-Fermi mixture Zhang, Tingyu Quantum Gases Atomic Physics The Goldstino, which is a fermionic Nambu-Goldstone mode, has been predicted in a Bose-Fermi mixture when the supersymmetry is broken. To detect this excitation mode, we theoretically investigate the shot noise of the supersymmetry-like tunneling current in a weakly interacting ultracold Bose-Fermi mixture. The Fano factor, which is defined by the noise-to-current ratio, reflect the elementary carriers of the tunneling process. The change of the Fano factor microscopically as the density changes evinces a crossover from the quasiparticle transport to multiparticle (Goldstino) transport. The tunneling channel can also be changed by tuning the potential barrier. |
| title | Supersymmetry-like tunneling current noise as a probe of Goldstino excitation in a Bose-Fermi mixture |
| topic | Quantum Gases Atomic Physics |
| url | https://arxiv.org/abs/2410.20794 |