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arXiv · 1107.5616

Two-neutron correlations in microscopic wave functions of He-6, He-8 and C-12

Yoshiko Kanada-En'yo·Hans Feldmeier·Tadahiro Suhara
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Abstract

Two-neutron densities obtained from microscopic wave functions of $^6$He and $^8$He are investigated to reveal di-neutron correlations. In particular, the comparison of the two-neutron density with the product of one-neutron densities is useful for a quantitative discussion of di-neutron correlations. The calculations show that the S=0 spatial two-neutron correlation increases at the surface of $^6$He$(0^+_1)$ and $^8$He$(0^+_2)$. The enhancement is remarkable in the $^6$He$(0^+_1)$ ground state but not as prominent in the $^8$He$(0^+_1)$ ground state. Configuration mixing of many Slater determinants is essential to describe the di-neutron correlations. Two-neutron densities in $^{12}$C wave functions with $\alpha$-cluster structures are also studied.

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Yoshiko Kanada-En'yo, Hans Feldmeier, Tadahiro Suhara. 2011-07-28. Two-neutron correlations in microscopic wave functions of He-6, He-8 and C-12. https://doi.org/10.1103/physrevc.84.054301

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