有限密度下的核子有效质量和EMC效应的一种可能解释

Nucleon Effective Mass at Finite Density and a Possible Explanation of the EMC Effect

用热场动力学方法计算了核物质中核子有效质量随密度的变化关系．利用有限密度中核子质量的改变，在Ｘ重新标度模型的基础上，讨论了不同核的结构函数的比率Ｒ（ｘ），与实验结果相符合．还考察了ＥＭＣ效应和Ｂｒｏｗｎ—Ｒｈｏ猜测之间的关系．

By means of the thermo field dynamics, the change of nucleon effective mass in nuclear matter with density is discussed. Based on the x-rescaling model, the ratios R(x) of the structure function for different nuclei are calculated from the shift of nucleon mass in nuclear matter. Our result is in agreement with the experiment.The relation between Brown-Rho conjecture and EMC effeCt is explored.