Resonance-to-bound transition of $^5$He in neutron matter and its analogy with heteronuclear Feshbach molecule
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2022
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| _version_ | 1866916164604526592 |
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| author | Tajima, Hiroyuki Moriya, Hajime Horiuchi, Wataru Iida, Kei Nakano, Eiji |
| author_facet | Tajima, Hiroyuki Moriya, Hajime Horiuchi, Wataru Iida, Kei Nakano, Eiji |
| contents | We theoretically investigate the fate of a neutron-alpha $p$-wave resonance in dilute neutron matter, which may be encountered in neutron stars and supernova explosions. While $^5$He is known as a resonant state that decays to a neutron and an alpha particle in vacuum, this unstable state turns into a stable bound state in the neutron Fermi sea because the decay process is forbidden by the Pauli-blocking effect of neutrons. Such a resonance-to-bound transition assisted by the Pauli-blocking effect can be realized in cold atomic experiments for a quantum mixture near the heteronuclear Feshbach resonance. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2207_13907 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Resonance-to-bound transition of $^5$He in neutron matter and its analogy with heteronuclear Feshbach molecule Tajima, Hiroyuki Moriya, Hajime Horiuchi, Wataru Iida, Kei Nakano, Eiji Nuclear Theory Quantum Gases We theoretically investigate the fate of a neutron-alpha $p$-wave resonance in dilute neutron matter, which may be encountered in neutron stars and supernova explosions. While $^5$He is known as a resonant state that decays to a neutron and an alpha particle in vacuum, this unstable state turns into a stable bound state in the neutron Fermi sea because the decay process is forbidden by the Pauli-blocking effect of neutrons. Such a resonance-to-bound transition assisted by the Pauli-blocking effect can be realized in cold atomic experiments for a quantum mixture near the heteronuclear Feshbach resonance. |
| title | Resonance-to-bound transition of $^5$He in neutron matter and its analogy with heteronuclear Feshbach molecule |
| topic | Nuclear Theory Quantum Gases |
| url | https://arxiv.org/abs/2207.13907 |