Nuclear Symmetry Energy with QCD Sum Rule

Kie Sang Jeong, Su Houng Lee

Research output: Contribution to journalArticle

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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sum rules
quantum chromodynamics
operators
symmetry
energy
quantum numbers
mesons
scalars
neutrons
expansion
protons
products

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Jeong, Kie Sang ; Lee, Su Houng. / Nuclear Symmetry Energy with QCD Sum Rule. In: Few-Body Systems. 2013 ; Vol. 54, No. 1-4. pp. 537-540.
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Nuclear Symmetry Energy with QCD Sum Rule. / Jeong, Kie Sang; Lee, Su Houng.

In: Few-Body Systems, Vol. 54, No. 1-4, 01.01.2013, p. 537-540.

Research output: Contribution to journalArticle

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