### 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 language | English |
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Pages (from-to) | 537-540 |

Number of pages | 4 |

Journal | Few-Body Systems |

Volume | 54 |

Issue number | 1-4 |

DOIs | |

Publication status | Published - 2013 Jan 1 |

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### All Science Journal Classification (ASJC) codes

- Atomic and Molecular Physics, and Optics

### Cite this

*Few-Body Systems*,

*54*(1-4), 537-540. https://doi.org/10.1007/s00601-012-0427-x

}

*Few-Body Systems*, vol. 54, no. 1-4, pp. 537-540. https://doi.org/10.1007/s00601-012-0427-x

**Nuclear Symmetry Energy with QCD Sum Rule.** / Jeong, Kie Sang; Lee, Su Houng.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Nuclear Symmetry Energy with QCD Sum Rule

AU - Jeong, Kie Sang

AU - Lee, Su Houng

PY - 2013/1/1

Y1 - 2013/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84873056918&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84873056918&partnerID=8YFLogxK

U2 - 10.1007/s00601-012-0427-x

DO - 10.1007/s00601-012-0427-x

M3 - Article

VL - 54

SP - 537

EP - 540

JO - Few-Body Systems

JF - Few-Body Systems

SN - 0177-7963

IS - 1-4

ER -