Constraining the EOS of QCD with lattice results and neutron star observations

Li, Cheng-Ming

In the framework of the modified Nambu-Jona-Lasinio (NJL) model, including the modification of the coupling strength and the Polyakov-loop extended version, we constrain the EOS of quark matter with the lattice results. To obtain the hybrid EOS and study hybrid stars, we connect the EOS of quark matter to the APR EOS of hadronic matter. With the recent neutron star observations, the parameter space will be further constrained, and the possible phase diagram of QCD is obtained.