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Quantum Simulation

Low-energy neutron scattering on light nuclei and 19B as a 17B-n-n three-body system in the unitary limit

arXiv
Authors: Jaume Carbonell, Emiko Hiyama, Rimantas Lazauskas, F. Miguel Marqués

Year

2019

Paper ID

39962

Status

Preprint

Abstract Read

~2 min

Abstract Words

118

Citations

N/A

Abstract

We consider the evolution of the neutron-nucleus scattering length for the lightest nuclei. We show that, when increasing the number of neutrons in the target nucleus, the strong Pauli repulsion is weakened and the balance with the attractive nucleon-nucleon interaction results into a resonant virtual state in 18B. We describe 19B in terms of a 17B-n-n three-body system where the two-body subsystems 17B-n and n-n are unbound (virtual) states close to the unitary limit. The energy of 19B ground state is well reproduced and two low-lying resonances are predicted. Their eventual link with the Efimov physics is discussed. This model can be extended to describe the recently discovered resonant states in 20,21B.

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  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
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  • We consider the evolution of the neutron-nucleus scattering length for the lightest nuclei.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1912.05427 [2] arXiv https://arxiv.org/abs/1912.05427 [3] Publisher https://arxiv.org/abs/1912.05427

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