Journal
PHYSICAL REVIEW C
Volume 107, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.107.044005
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In this study, the quantum information aspects of spin correlations in partially polarized neutron-proton scattering in the S wave were explored. It was found that the spin mutual information, entanglement, and discord of the out-states vary in a similar way with respect to the relative momentum when averaged over the possible in-states. The novel connection between emergent symmetry and spin entanglement discovered in a previous study could be extended to spin correlations beyond entanglement.
Nucleon-nucleon scattering is a fundamental process in low-energy nuclear physics. Although its spin corre-lations have been studied intensively, few works take the perspective of quantum information science. In this work, I explore the quantum information aspects of spin correlations in the partially polarized neutron-proton scattering in the S wave. It is found that the spin mutual information, entanglement and discord of the out-states, when averaged over the possible in-states, all vary in a similar way with respect to the relative momentum. The novel connection between emergent symmetry and spin entanglement found by a previous study [Phys. Rev. Lett. 122, 102001 (2019)] could then be extended naturally to spin correlations beyond entanglement.
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