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$Δ(1232)$ Isobar Excitations in Nuclear Many-Body Systems derived from various NN Interactions

T. Frick·S. Kaiser·H. Müther·A. Polls
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Abstract

$Δ$ isobar components in the nuclear many-body wave function are investigated for the deuteron, light nuclei (${}^{16}O$) and infinite nuclear matter within the framework of the coupled-cluster theory. The predictions derived for various realistic models of the baryon-baryon interaction are compared to each other. These include local ($V28$) and non-local meson exchange potentials (Bonn$_{2000}$) but also a model recently derived by the Salamanca group accounting for quark degrees of freedom. The characteristic differences which are obtained for the $NΔ$ and $ΔΔ$ correlation functions are related to the approximation made in deriving the matrix elements for the baryon-baryon interaction.

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T. Frick, S. Kaiser, H. Müther, A. Polls. 2001-01-16. $Δ(1232)$ Isobar Excitations in Nuclear Many-Body Systems derived from various NN Interactions. https://doi.org/10.1103/physrevc.64.014309

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