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arXiv · 2207.13907

Resonance-to-bound transition of $^5$He in neutron matter and its analogy with heteronuclear Feshbach molecule

Hiroyuki Tajima·Hajime Moriya·Wataru Horiuchi·Kei Iida·Eiji Nakano
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Abstract

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.

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Hiroyuki Tajima, Hajime Moriya, Wataru Horiuchi, Kei Iida, Eiji Nakano. 2022-07-28. Resonance-to-bound transition of $^5$He in neutron matter and its analogy with heteronuclear Feshbach molecule. https://doi.org/10.1103/physrevc.106.045807

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