QMC模型的介质相关参数的确定及核物质中的夸克凝聚

In-medium QMC Model Parameters and Quark Condensation in Nuclear Matter

通过把QMC模型参数展到σ场的一阶项来引入模型参数的核介质效应，并利用核子袋在介质中的平衡条件自洽地确定展开系数．计算结果表明袋参数及核子半径受介质影响较大，而零点运动参数则保持不变．在此基础上，分析了介质相关的模型参数对核物质状态方程及夸克凝聚的影响．

We proposed a new method to determine the in-medium QMC parametersconsistently. Our resultS illustrate that the bag constant and the nucleon radius aregreatly influenced by the nuclear medium, however, the parameter for zero-pointinchon keeps its vacuum value. Then we discuss the effects of in-medium QMCparameters on the equation of state of nuclear matter and quark condensation innuclear maser.