STRUCTURE OF COMPACT STARS WITH DENSE HADRONIC MATTER AT THE CORE

For a dense stellar matter, it is generally expected that as density increases, new degrees of freedom will emerge as the electron chemical potential becomes comparable to their energy scales. We discuss the nature of symmetry energy, which measures the energy relevant to the neutron-proton asymmetry and more importantly determines the electron chemical potential in weak equilibrium. The possible structure of compact stars with strangeness is briefly discussed for the case of kaon condensation.