513 citations · 3k across the 139 of their papers we have counts for
17 papers · 1 filter
Probing the QCD phase transition with chiral mixing in dilepton production
Azumi Sakai, Masayasu Harada, Chiho Nonaka +3
We perform a systematic study of dilepton emission in a hot QCD medium based on three different scenarios of chiral mixing, each of which yields a characteristic structure in the v…
Neutron star matter based on a parity doublet model including the meson
Yuk Kei Kong, Takuya Minamikawa, Masayasu Harada
We study the effect of the isovector-scalar meson (980) on the properties of nuclear matter and the neutron star (NS) matter by constructing a parity doublet model with includ…
Chiral restoration of nucleons in neutron star matter: studies based on a parity doublet model
Takuya Minamikawa, Bikai Gao, Toru kojo +1
We review the chiral variant and invariant components of nucleon masses and its consequence on the chiral restoration in extreme conditions, neutron star matter in particular. We c…
Impacts of anomaly on nuclear and neutron star equation of state based on a parity doublet model
Bikai Gao, Takuya Minamikawa, Toru Kojo +1
We examine the role of the anomaly in a parity doublet model of nucleons which include the chiral variant and invariant masses. Our model expresses the anomaly by…
Chiral condensates for neutron stars in hadron-quark crossover; from a parity doublet nucleon model to an NJL quark model
Takuya Minamikawa, Toru Kojo, Masayasu Harada
In this contribution, we summarize our recent studies on the chiral invariant mass and the chiral condensates in neutron star matter. We construct a unified equations of state assu…
Chiral condensates for neutron stars in hadron-quark crossover: from a parity doublet nucleon model to an NJL quark model
Takuya Minamikawa, Toru Kojo, Masayasu Harada
We study the chiral condensates in neutron star matter from nuclear to quark matter domain. We describe nuclear matter with a parity doublet model (PDM), quark matter with the Namb…
Quark-hadron crossover equations of state for neutron stars: constraining the chiral invariant mass in a parity doublet model
Takuya Minamikawa, Toru Kojo, Masayasu Harada
We construct an equation of state (EOS) for neutron stars by interpolating hadronic EOS at low density and quark EOS at high density. A hadronic model based on the parity doublet s…
Constraint to chiral invariant masses of nucleons from GW170817 in an extended parity doublet model
Takahiro Yamazaki, Masayasu Harada
We construct nuclear matter based on an extended parity doublet model including four light nucleons , , , and . We exclude some values of the chi…
Nuclear structure in Parity Doublet Model
Myeong-Hwan Mun, Ik Jae Shin, Won-Gi Paeng +2
Using an extended parity doublet model with the hidden local symmetry, we study some properties of nuclei in the mean field approximation to see if the parity doublet model could r…
Catalysis of partial chiral symmetry restoration by Delta matter
Yusuke Takeda, Youngman Kim, Masayasu Harada
We study the phase structure of dense hadronic matter including as well as N(939) based on the parity partner structure, where the baryons have their chiral partners with…
Spectral functions for meson and meson in nuclear matter with partial restoration of chiral symmetry
Daiki Suenaga, Shigehiro Yasui, Masayasu Harada
We investigate the in-medium masses of a meson and a meson and spectral functions for and meson channels in nuclear matt…
Charged pions tagged with polarized photons probing strong CP violation in a chiral-imbalance medium
Mamiya Kawaguchi, Masayasu Harada, Shinya Matsuzaki +1
It is expected that in a hot QCD system, a local parity-odd domain can be produced due to nonzero chirality, which is induced from the difference of winding numbers carried by the…
The mass of heavy-light mesons in a constituent quark picture with partially restored chiral symmetry
Aaron Park, Philipp Gubler, Masayasu Harada +3
We probe effects of the partial chiral symmetry restoration to the mass of heavy-light mesons in a constituent quark model by changing the constituent quark mass of the light quark…
Fractionized Skyrmions in Dense Compact-Star Matter
Masayasu Harada, Hyun Kyu Lee, Yong-Liang Ma +1
The hadronic matter described as a skyrmion matter embedded in an FCC crystal is found to turn into a half-skyrmion matter with vanishing (in the chiral limit) quark condensate and…
Asymmetric nuclear matter in a parity doublet model with hidden local symmetry
Yuichi Motohiro, Youngman Kim, Masayasu Harada
We construct a model to describe dense hadronic matter at zero and finite temperature, based on the parity doublet model of DeTar and Kunihiro, with including the iso-singlet scala…
A Hidden Local Field Theory Description of Dileptons in Relativistic Heavy Ion Collisions
Gerald E. Brown, Masayasu Harada, Jeremy W. Holt +2
This paper has been withdrawn by the authors. Some of the arguments developed in the paper are erroneous. They will be rectified in a later publication.
Scaling Behavior in Soliton Models
M. Harada, F. Sannino, J. Schechter +1
In the framework of chiral soliton models we study the behavior of static nucleon properties under rescaling of the parameters describing the effective meson theory. In particular…