The $\Sigma \Sigma$ interactions in finite-density QCD sum rules

Abstract

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.

Latex, 9 pages with 10 figures

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Cited by in corpus (2)

• Impact of QCD sum rules coupling constants on neutron stars structure
• QCD sum rules for the baryon octet in nuclear matter