activity
20062024
most citedFrom hadrons to quarks in neutron stars: a review

763 citations · 3k across the 68 of their papers we have counts for

collaborators

70 papers

hep-ph2024

Isospin QCD as a laboratory for dense QCD

Toru Kojo, Daiki Suenaga, Ryuji Chiba

QCD with the isospin chemical potential, , is a useful laboratory to delineate the microphysics in dense QCD. To study the quark-hadron-continuity we use a quark-meson model t…

hep-ph2024★ 8 cited

Thermal effects on sound velocity peak and conformality in isospin QCD

Ryuji Chiba, Toru Kojo, Daiki Suenaga

We study thermal effects on equations of state (EOS) in isospin QCD, utilizing a quark-meson model coupled to a Polyakov loop. The quark-meson model is analyzed at one-loop that is…

astro-ph.HE2023★ 11 cited

Universality in quasinormal modes of neutron stars with quark-hadron crossover

Hajime Sotani, Toru Kojo

We examine the gravitational wave frequencies of the fundamental (-) and 1st pressure (-) modes excited in the neutron star models constructed with the quark-hadron crossov…

hep-ph2023

Parity doublet model for baryon octets: diquark classifications and mass hierarchy based on the quark-line diagram

Takuya Minamikawa, Bikai Gao, Toru kojo +1

We construct invariant parity doublet models within the linear realization of the chiral symmetry. Describing baryons as the supe…

nucl-th2023★ 46 cited

Momentum Shell in Quarkyonic Matter from Explicit Duality: A Dual Model for Cold, Dense QCD

Yuki Fujimoto, Toru Kojo, Larry D. McLerran

We present a model of cold QCD matter that bridges nuclear and quark matter through the duality relation between quarks and baryons. The baryon number and energy densities are expr…

hep-ph2023★ 31 cited

Sound velocity peak and conformality in isospin QCD

Ryuji Chiba, Toru Kojo

We study zero temperature equations of state (EOS) in isospin QCD within a quark-meson model which is renormalizable and hence eliminates high density artifacts in models with the…