New Parametrizations for a Model with Nonlinear Derivative Couplings

We propose three parameter sets for the Lagrangian with nonlinear derivative couplings in the relativistic mean field theory. The properties of finite nuclei and nuclear matter are explored. The study shows that a good description of binding energies, charge radii and neutron skin thickness of nucle...

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Published inChinese physics letters Vol. 31; no. 7; pp. 55 - 58
Main Author 陈晏军
Format Journal Article
LanguageEnglish
Published 01.07.2014
Subjects
Couplings
Derivatives
Field theory
Mathematical models
Nonlinearity
Nuclei
Parametrization
Softening
中子皮厚度
参数化
拉格朗日模型
接头模型
相对论平均场模型
相对论平均场理论
衍生
非线性相互作用
Online AccessGet full text
ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/31/7/072102

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Abstract We propose three parameter sets for the Lagrangian with nonlinear derivative couplings in the relativistic mean field theory. The properties of finite nuclei and nuclear matter are explored. The study shows that a good description of binding energies, charge radii and neutron skin thickness of nuclei is achieved with this Lagrangian. It is also shown that this Lagrangian model leads to a softening of the equation of state and symmetry energy at high densities, and gives a much less repulsive optical potential at high nucleon energies compared to standard relativistic mean field models.
AbstractList We propose three parameter sets for the Lagrangian with nonlinear derivative couplings in the relativistic mean field theory. The properties of finite nuclei and nuclear matter are explored. The study shows that a good description of binding energies, charge radii and neutron skin thickness of nuclei is achieved with this Lagrangian. It is also shown that this Lagrangian model leads to a softening of the equation of state and symmetry energy at high densities, and gives a much less repulsive optical potential at high nucleon energies compared to standard relativistic mean field models.
Author 陈晏军
AuthorAffiliation Department of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410114
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10.1016/0375-9474(94)90923-7
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10.1103/PhysRevC.67.034002
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Notes 11-1959/O4
We propose three parameter sets for the Lagrangian with nonlinear derivative couplings in the relativistic mean field theory. The properties of finite nuclei and nuclear matter are explored. The study shows that a good description of binding energies, charge radii and neutron skin thickness of nuclei is achieved with this Lagrangian. It is also shown that this Lagrangian model leads to a softening of the equation of state and symmetry energy at high densities, and gives a much less repulsive optical potential at high nucleon energies compared to standard relativistic mean field models.
CHEN Yan-Jun（ Department of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410114）
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SubjectTerms Couplings
Derivatives
Field theory
Mathematical models
Nonlinearity
Nuclei
Parametrization
Softening
中子皮厚度
参数化
拉格朗日模型
接头模型
相对论平均场模型
相对论平均场理论
衍生
非线性相互作用
Title New Parametrizations for a Model with Nonlinear Derivative Couplings
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