Second excited state of ${}^4\mathrm{He}$ tetramer
Fuente:
arXiv
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866912900931649536 |
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| author | Deltuva, A. |
| author_facet | Deltuva, A. |
| contents | The four-boson universality suggests the existence of the second excited tetramer state in a system of cold ${}^4\mathrm{He}$ atoms. It is not bound but could be seen as a resonance in the atom-trimer scattering. This process is rigorously calculated using the momentum-space transition operator framework with two realistic interatomic potentials. The $S$-wave phase shift and cross section show a resonant behavior below the excited trimer threshold, but there are sizable nonresonant contributions from $P$ and $D$ waves as well. The position and width of the resonant state is determined, and for the latter significant finite-range effects are found. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_12225 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Second excited state of ${}^4\mathrm{He}$ tetramer Deltuva, A. Quantum Gases Nuclear Theory Atomic Physics The four-boson universality suggests the existence of the second excited tetramer state in a system of cold ${}^4\mathrm{He}$ atoms. It is not bound but could be seen as a resonance in the atom-trimer scattering. This process is rigorously calculated using the momentum-space transition operator framework with two realistic interatomic potentials. The $S$-wave phase shift and cross section show a resonant behavior below the excited trimer threshold, but there are sizable nonresonant contributions from $P$ and $D$ waves as well. The position and width of the resonant state is determined, and for the latter significant finite-range effects are found. |
| title | Second excited state of ${}^4\mathrm{He}$ tetramer |
| topic | Quantum Gases Nuclear Theory Atomic Physics |
| url | https://arxiv.org/abs/2602.12225 |