Neutron matter within QCD sum rules

Abstract

Equation of state (EOS) of pure neutron matter (PNM) is studied in QCD sum rules (QCDSR). It is found that the QCDSR results on EOS of PNM are in good agreement with predictions by current advanced microscopic many-body theories. Moreover, the higher-order density terms in quark condensates are shown to be important to describe the empirical EOS of PNM in the density region around and above nuclear saturation density although they play minor role at subsaturation densities. The chiral condensates in PNM are also studied, and our results indicate that the higher-order density terms in quark condensates, which are introduced to reasonably describe the empirical EOS of PNM at suprasaturation densities, tend to hinder the appearance of chiral symmetry restoration in PNM at high densities.

7 pages, 2 figures. Discussions added and presentation improved. Accepted version to appear in PRC

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• Many-Body Physics with Ultracold Gases
• Theory of ultracold Fermi gases
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• Many body effects in nuclear matter QCD sum rules

Cited by in corpus (4)

• GW190814: Circumstantial Evidence for Up-Down Quark Star
• Relativistic self-energy decomposition of nuclear symmetry energy and equation of state of neutron matter within QCD sum rules
• Nucleon Short-Range Correlations and High-Momentum Dynamics: Implications on the Equation of State of Dense Matter
• Pairing effects on neutron matter equation of state and symmetry energy at subsaturation densities