QCS2026

Session

Session 4

30 Apr 2026, 13:10

Conveners

Session 4

• Philipp Gubler (JAEA)

Session 4

• Philipp Gubler (JAEA)

14. Self-bound hybrid stars with strong phase transitions can relieve major compact star observation tensions ----(online)----

Chen Zhang (Tongji University)

30/04/2026, 13:10

Some recent pulsar observations cannot naturally fit into the conventional picture of neutron stars: the compact objects associated with HESS J1731-347 and XTE J1814-338 have too small radii in the low-mass regime, while the secondary component of GW190814 is too massive for neutron stars to be compatible with constraints from the GW170817 event. In this study, we demonstrate that all these...

62. Understanding of Equations of States from Nuclear Transport Simulations.

Myungkuk Kim (CENS/IBS)

30/04/2026, 13:45

Nuclear transport simulations are essential theoretical tools for exploring the properties of high-density nuclear matter. Numerous heavy-ion collision facilities around the world, such as RAON, RIKEN Nishina Center, and FRIB, are conducting a wide range of experiments, leading to the accumulation of extensive experimental data. In this context, the importance of nuclear transport...

60. Experimental plans in proton-nucleus and nucleus-nucleus collisions at J-PARC

Hiroyuki Sako (JAEA)

30/04/2026, 14:50

J-PARC is one of the world’s highest-intensity proton accelerators for material and life sciences, neutrino physics, and hadron and nuclear physics in a few ten GeV. J-PARC-HI (J-PARC Heavy-Ion Project) aims to accelerate heavy-ion beams at J-PARC, where we will introduce a heavy-ion injector consisting of a heavy-ion linac and a booster ring, while the heavy-ion beams are accelerated in the...

47. Status and Commissioning Results of the J-PARC E16 experiment

Satomi Nakasuga

30/04/2026, 15:25

The J-PARC E16 experiment aims to experimentally observe modifications of vector meson mass spectra in a nuclear medium, which are expected as a consequence of the partial restoration of chiral symmetry at finite density. In the experiment, vector mesons are produced by the 30 GeV proton beam at J-PARC on nuclear targets, and their di-electron decay is detected to obtain the invariant mass...

13. Splitting of Transverse and Longitudinal Spectral Functions of the $\phi$ Meson at Finite Temperature and Density

Hidefumi Matsuda (Zhejiang University)

30/04/2026, 16:00

We investigate the spectral function of the $\phi$ meson in hot and dense nuclear matter created in low-energy heavy-ion collisions, where the existence of the medium's rest frame leads to a splitting between the transverse and longitudinal modes of vector mesons. We compute the transverse and longitudinal spectral functions within the framework of QCD sum rules and apply them to the...