标题： 从夸克-介子耦合模型中恢复相对论核现象学 显示英文标题

标题： Recovering Relativistic Nuclear Phenomenology from the Quark-Meson Coupling Model

摘要： 夸克-介子耦合（QMC）模型描述核物质为通过自洽交换标量和矢量介子结合的非重叠MIT袋，通过引入密度依赖的袋常数对其进行修改。袋常数的密度依赖性通过核物质中部分手征对称性恢复所提出的缩放假设与介质中有效核子质量的密度依赖性相关。这种修改克服了QMC模型的缺点，并导致相对论核现象的基本特征得以恢复。这表明在核介质中袋常数的修改可能在低能和中能核物理中起重要作用。 显示英文摘要

摘要： The quark-meson coupling (QMC) model for nuclear matter, which describes nuclear matter as non-overlapping MIT bags bound by the self-consistent exchange of scalar and vector mesons is modified by the introduction of a density dependent bag constant. The density dependence of the bag constant is related to that of the in-medium effective nucleon mass through a scaling ansatz suggested by partial chiral symmetry restoration in nuclear matter. This modification overcomes drawbacks of the QMC model and leads to the recovery of the essential features of relativistic nuclear phenomenology. This suggests that the modification of the bag constant in the nuclear medium may play an important role in low- and medium-energy nuclear physics.