Proton-neutron entanglement entropy is shown to track the formation of the island of inversion in Ne, Mg, and Si isotopes, with mutual information revealing stronger proton-neutron correlations in excited states than in ground states.
Sagawa, Second Law-Like Inequalities with Quantum Relative Entropy: An Introduction, arXiv:1202.0983 [quant-ph](2012)
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Entanglement study in the island of inversion region using \textit{ab initio} approach
Proton-neutron entanglement entropy is shown to track the formation of the island of inversion in Ne, Mg, and Si isotopes, with mutual information revealing stronger proton-neutron correlations in excited states than in ground states.