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介子自能中的交换图对高密核物质性质的影响
  • 时间：0
  • 分类：O571.2[理学—粒子物理与原子核物理;理学—物理]
  • 作者机构：[1]闽江学院物理学与电子信息工程系,福建福州350108, [2]南华大学核科学技术学院,湖南衡阳421001
  • 相关基金：国家自然科学基金资助项目（11247287;11175020;11447021）
作者： 翁铭华[1], 张振华[2]
关键词： 交换图, 介子的有效质量, 状态方程, exchange diagram, in-medium meson mass, equation of state
中文摘要：

基于非线性平均场模型,引入介子自能中的交换图修正,得到介子在介质中的有效质量随核物质密度的变化,且影响核子在介质中的有效质量以及高密核物质的状态方程,使得高密核物质的状态方程变软.

英文摘要：

Based on the nonlinear mean field model,the contribution of the exchange diagram in the self-energy of mesons is introduced.This correction leads to the variation of the in-medium meson mass with respect to the nuclear matter density.It also modifies the in-medium nucleon masses and the properties of high density nuclear matter.The equation of state for high density nuclear matter is softer due to the contribution of the exchange diagram.

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