论文标题
温暖恒星物质中的轻型簇：校准群集耦合
Light clusters in warm stellar matter: calibrating the cluster couplings
论文作者
论文摘要
使用多种相对论的平均场模型计算出对中等效应的形式主义中的光簇的丰度，并具有密度依赖性和密度无关的耦合。将簇作为新的准颗粒引入，并与标量介子场进行了修改。与重离子碰撞的实验数据的比较允许解决结果的模型依赖性，并确定光簇与介子场的耦合。我们发现，需要在更高密度的情况下进行额外的实验约束，以说服与密集核培养基中簇熔化相关的密度固定。讨论了不对称物质中的中子丰富的簇（例如$^6 $ he）的作用。
The abundances of light clusters within a formalism that considers in-medium effects are calculated using several relativistic mean-field models, with both density-dependent and density-independent couplings. Clusters are introduced as new quasiparticles, with a modified coupling to the scalar meson field. A comparison with experimental data from heavy ion collisions allows settling the model dependence of the results and the determination of the couplings of the light clusters to the meson fields. We find that extra experimental constraints at higher density are needed to convincingly pin down the density associated to the melting of clusters in the dense nuclear medium. The role of neutron rich clusters, such as $^6$He, in asymmetric matter is discussed.
