The hadron-quark phase transition is studied with the newly constructed Hadron-Poyakov-Nambu- Jona-Lasinio(PNJL) model.Particularly,in the description of quark matter,we include the isoscalar-vector interaction.With t...The hadron-quark phase transition is studied with the newly constructed Hadron-Poyakov-Nambu- Jona-Lasinio(PNJL) model.Particularly,in the description of quark matter,we include the isoscalar-vector interaction.With the constraints of neutron star observations,our calculation shows the isoscalar-vector interaction between quarks is indispensable if massive hybrids star exist in the universe.Its strength determines the onset density of quark matter,and the mass-radius relations of hybrid stars.Also,as a connection with heavy-ion-collision experiments,we discuss the strength of isoscalar-vector interaction and its effect on the signals of hadron-quark phase transition in heavy-ion collisions,such as NICA at JINR-Dubna and FAIR at GSI-Darmstadt.展开更多
We study the hadron-quark phase transition in the interior of neutron stars, and examine the influence of the nuclear equation of state on the phase transition and neutron star properties. The relativistic mean field ...We study the hadron-quark phase transition in the interior of neutron stars, and examine the influence of the nuclear equation of state on the phase transition and neutron star properties. The relativistic mean field theory with several parameter sets is used to construct the nuclear equation of state, while the Nambu-Jona-Lasinio model is used for the description of the deconfined quark phase. Our results show that a harder nuclear equation of state leads to an earlier onset of a mixed phase of hadronic and quark matter. We find that a massive neutron star possesses a mixed phase core, but it is not dense enough to possess a pure quark core.展开更多
基金Supported by National Natural Science Foundation of China(NSFC) projects (Nos.11147144 and 11305121)
文摘The hadron-quark phase transition is studied with the newly constructed Hadron-Poyakov-Nambu- Jona-Lasinio(PNJL) model.Particularly,in the description of quark matter,we include the isoscalar-vector interaction.With the constraints of neutron star observations,our calculation shows the isoscalar-vector interaction between quarks is indispensable if massive hybrids star exist in the universe.Its strength determines the onset density of quark matter,and the mass-radius relations of hybrid stars.Also,as a connection with heavy-ion-collision experiments,we discuss the strength of isoscalar-vector interaction and its effect on the signals of hadron-quark phase transition in heavy-ion collisions,such as NICA at JINR-Dubna and FAIR at GSI-Darmstadt.
基金Supported by National Natural Science Foundation of China(10675064)Specialized Research Fund for the Doctoral Program of Higher Education(20040055010)
文摘We study the hadron-quark phase transition in the interior of neutron stars, and examine the influence of the nuclear equation of state on the phase transition and neutron star properties. The relativistic mean field theory with several parameter sets is used to construct the nuclear equation of state, while the Nambu-Jona-Lasinio model is used for the description of the deconfined quark phase. Our results show that a harder nuclear equation of state leads to an earlier onset of a mixed phase of hadronic and quark matter. We find that a massive neutron star possesses a mixed phase core, but it is not dense enough to possess a pure quark core.
基金This work was supported by the National Science Foundation of China under project90 1 0 3 0 1 9and bythe science foundation of the Education Department of Hubei Province
基金supported by the National Natural Science Foundation of China (11775213, 12005220)the USTC Research Funds of the Double First-Class Initiative(YD2360002001)。
