5 papers · 1 filter
Quarkyonic matter with chiral symmetry restoration
Bikai Gao, Masayasu Harada
We present a novel unified approach to describe the dense symmetric nuclear matter by combining the quarkyonic matter framework with the parity doublet model. This integration allo…
Exploring the first-order phase transition in neutron stars using the parity doublet model and NJL-type quark model
Bikai Gao, Wen-Li Yuan, Masayasu Harada +1
We investigate the possibility and impacts of a first-order phase transition from hadronic matter to quark matter in neutron stars (NSs) using two specific models: the parity doubl…
Nuclear matter and finite nuclei: recent studies based on Parity Doublet Model
Yuk-Kei Kong, Youngman Kim, Masayasu Harada
In this review, we summarize recent studies on nuclear matter and finite nuclei based on parity doublet models. We first construct a parity doublet model (PDM), which includes the…
Reconciling the HESS J1731-347 constraints with Parity doublet model
Bikai Gao, Yan Yan, Masayasu Harada
The recent discovery of a central compact object (CCO) within the supernova remnant HESS J1731-347, characterized by a mass of approximately and a…
Parity doublet model for baryon octets: ground states saturated by good diquarks and the role of bad diquarks for excited states
Bikai Gao, Toru Kojo, Masayasu Harada
Parity doublet model is an effective chiral model that includes the chiral variant and invariant masses of baryons. The chiral invariant mass has large impacts on the density depen…