Nuclear Symmetry Energy with QCD Sum Rule

Kie Sang Jeong, Su Houng Lee

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Abstract

We calculate the nucleon self-energies in an isospin asymmetric nuclear matter using QCD sum rule. Taking the difference of these for the neutron and proton enables us to express an important part of the nuclear symmetry energy in terms of local operators. Calculating the operator product expansion up to mass dimension six operators, we find that the main contribution to the difference comes from the iso-vector scalar and vector operators, which is reminiscent to the case of relativistic mean field type theories where mesons with aforementioned quantum numbers produce the difference and provide the dominant mechanism for nuclear symmetry energy.

Original languageEnglish
Pages (from-to)537-540
Number of pages4
JournalFew-Body Systems
Volume54
Issue number1-4
DOIs
Publication statusPublished - 2013 Jan 1

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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