标题： 中性介子在不对称核物质中的传播 显示英文标题

标题： Propagation of neutral mesons in asymmetric nuclear matter

摘要： 我们计算了在质子-中子不对称的相对论核物质中，$\sigma$、$\omega$、$\rho$和$\delta$介子的色散关系和传播子。 除了对称物质中已存在的$\sigma$-$\omega$和$\delta$-$\rho$混合之外，当质子分数不同于 1/2 时，$\sigma$-$\omega$-$\delta$-$\rho$系统的所有组分之间都会发生混合。 显示英文摘要

摘要： We calculate dispersion relations and propagators for the $\sigma$, $\omega$, $\rho$ and $\delta$ mesons in relativistic nuclear matter with a proton-neutron asymmetry. In addition to the $\sigma$-$\omega$ and $\delta$-$\rho$ mixings already present in symmetric matter, mixing occur between all components of the $\sigma$-$\omega$-$\delta$-$\rho$ system when the proton fraction differs from 1/2.