763 citations · 3k across the 68 of their papers we have counts for
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Implications of NICER for neutron star matter: the QHC21 equation of state
Toru Kojo, Gordon Baym, Tetsuo Hatsuda
The recent NICER measurement of the radius of the neutron star PSR J0740+6620, and the inferred small variation of radii from 1.4 to 2.1, reveal key features of t…
Peaks of sound velocity in two color dense QCD: quark saturation effects and semishort range correlations
Toru Kojo, Daiki Suenaga
We discuss stiffening of dense matter in two color QCD (QCD) where hadrons are mesons and diquark baryons. We study two models which describe a transition of matter from the Bo…
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…
Stiffening of matter in quark-hadron continuity
Toru Kojo
We discuss stiffening of matter in quark-hadron continuity. We introduce a model that relates quark wave functions in a baryon and the occupation probability of states for baryons…
Delineating chiral separation effect in two-color dense QCD
Daiki Suenaga, Toru Kojo
We study the chiral separation effect (CSE) in two-color and two-flavor QCD (QCD) to delineate quasiparticle pictures in dense matter from low to high temperatures. Both massle…
Neutral and charged mesons in magnetic fields: A resonance gas in a non-relativistic quark model
Toru Kojo
We analyze mesons in constant magnetic fields () within a non-relativistic constituent quark model. Our quark model contains a harmonic oscillator type confining potential, and…
Thermal quarks and gluon propagators in two-color dense QCD
Toru Kojo, Daiki Suenaga
We study Landau gauge gluon propagators in two-color QCD at finite quark chemical potential () and temperature (). We include medium polarization effects at one-loop by qua…