10 papers
A quark-diquark model for parity doublet structure of baryons
Bikai Gao, Masayasu Harada
The chiral invariant mass of baryons is a phenomenological input of parity doublet models, and its microscopic origin remains an open question. We propose that the chiral invariant…
Chiral symmetry restoration and hyperon suppression in neutron stars
Bikai Gao
The ``hyperon puzzle'' remains a fundamental challenge in nuclear astrophysics. We investigate hyperon emergence in neutron star matter using the parity doublet model with…
Linear realization of SU(3) parity doublet model for octet baryons with bad diquark
Bikai Gao, Atsushi Hosaka
We construct a linear parity doublet model for octet baryons. Our model employs the and chiral representations…
Constraining the competition between the deconfinement and chiral phase transitions in light of the multimessenger era
Wen-Li Yuan, Bikai Gao, Yan Yan +2
We extend the parity doublet model for hadronic matter and study the possible presence of quark matter inside the cores of neutron stars with the Nambu-Jona-Lasinio (NJL) model. Co…
Hybrid stars with large quark cores within the parity doublet model and modified NJL model
Wen-Li Yuan, Bikai Gao, Yan Yan +1
Using the parity doublet model (PDM) for hadronic matter and a modified Nambu-Jona-Lasinio (NJL) model for quark matter, we investigate the potential existence of two- and three-fl…
Origin of nucleon mass in the light of PSR J0614-3329 with quark-hadron crossover
Bikai Gao, Yuk-Kei Kong, Yong-Liang Ma
The recent NICER observation of PSR J0614-3329, revealing the smallest reliably measured neutron star radius of km at mass $M = 1.44^{+0.06}_{-0.07} M_\…