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

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

2007-11-07

arxiv.org/abs/0711.1003v3

Phys.Rev.C77:045202,2008

Physics

Nuclear Physics

Nuclear Theory

Latex, 9 pages with 10 figures

Scientific paper

10.1103/PhysRevC.77.045202

The properties of $\Sigma$-hyperons in pure $\Sigma$ matter are studied with the finite-density quantum chromo-dynamics sum rule (QCDSR) approach. The $\Sigma\Sigma$ nuclear potential $U_\Sigma$ 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 $\Sigma$-hyperons should play crucial roles in the strange nuclear matter, when there are multi-$\Sigma$ hyperons. The bound state of double-$\Sigma$ maybe exist.

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