Speaker
Description
I will summarize our recent works in which we studied neutron star property based on Parity Doublet Models. In the low-density region, we construct the EoS using hadronic models based on the parity doublet structure with the chiral invariant mass of nucleons. In the high density region, the EoS is obtained in an NJL-type quark model. By connecting two EoSs with assuming the quark-hadron crossover or first order phase transition, we construct unified EoSs for dense matter. We then derive the M-R relation of neutron stars from the unified EoSs and compare the result with the observational constraints to obtain an allowed range for the chiral invariant mass.
Based on
[1] Y. Motohiro, Y.Kim, M.Harada, Phys. Rev. C 92, 025201 (2015);Erratum: Phys. Rev. C 95, 059903 (2017).
[2] T. Minamikawa, T. Kojo and M. Harada, Phys. Rev. C 103, 045205 (2021).
[3] T. Minamikawa, T. Kojo and M. Harada, Phys. Rev. C 104, 065201 (2021).
[4] T. Minamikawa, B. Gao, T. Kojo and M. Harada, Symmetry 15, 745 (2023).
[5] B. Gao, Y. Yan and M. Harada, Phys. Rev. C 109, 065807 (2024).
[6] Y.-K. Kong, T. Minamikawa and M. Harada, Phys. Rev. C 108, 055206 (2023).
[7] Y.-K. Kong and M. Harada, Nuclear Physics Review, 2024, 41(3): 787-793
[8] B. Gao, W.L.Yuan, M. Harada and Y.L. Ma, Phys. Rev. C 110, 045802 (2024)
