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arXiv · 0711.1003

The $ΣΣ$ interactions in finite-density QCD sum rules

P. Li·X. H. Zhong·L. Li·P. Z. Ning
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Abstract

The properties of $Σ$-hyperons in pure $Σ$ matter are studied with the finite-density quantum chromo-dynamics sum rule (QCDSR) approach. The $ΣΣ$ nuclear potential $U_Σ$ is most likely strongly attractive, it could be about -50 MeV or even more attractive at normal nuclear density. If this prediction is the case, the interactions between $Σ$-hyperons should play crucial roles in the strange nuclear matter, when there are multi-$Σ$ hyperons. The bound state of double-$Σ$ maybe exist.

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P. Li, X. H. Zhong, L. Li, P. Z. Ning. 2008-03-26. The $ΣΣ$ interactions in finite-density QCD sum rules. https://doi.org/10.1103/physrevc.77.045202

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