QCS2026

Session

Session 2

29 Apr 2026, 13:40

Conveners

Session 2

• Hajime Togashi (RIKEN)

Session 2

• Hajime Togashi (RIKEN)

35. Nuclear masses and structures from the DRHBc framework and their astrophysical implications

Myeong-Hwan Mun (Kyungpook National University)

29/04/2026, 13:40

Understanding dense and hot QCD matter in compact stars, supernovae, and neutron-star mergers requires reliable microscopic nuclear physics inputs far from the valley of stability. Nuclear mass tables provide essential quantities such as binding energies, neutron separation energies, β-decay Q-values, and nuclear deformation, which directly affect the equation of state, r-process...

45. Inferring the trace anomaly of dense matter from neutron star observations

Lap-Ming Lin (The Chinese University of Hong Kong)

29/04/2026, 14:15

The trace anomaly $\Delta$ is an important quantity that measures the broken conformal symmetry in neutron star matter. In this talk, we will introduce quasi-universal relations that connect the stellar profile of $\Delta$ to the compactness, moment of inertia, and tidal deformability of neutron stars. We will also discuss how the behavior of $\Delta$ inside neutron stars can be inferred from...

46. A study of neutron star property based on the Parity Doublet Models

Masayasu Harada (KMI, Nagoya University)

29/04/2026, 15:20

I will briefly summarize our works in which we studied neutron star property based on Parity Doublet Models. In the low-density region, we construct the EoS using hadronic models based on the parity doublet structure with the chiral invariant mass of nucleons. In the high density region, the EoS is obtained in an NJL-type quark model. By connecting two EoSs with assuming the quark-hadron...

33. Chiral symmetry restoration and hyperon suppression in neutron stars

Bikai Gao (RCNP, Osaka University)

29/04/2026, 15:55

The ``hyperon puzzle'' remains a fundamental challenge in nuclear astrophysics. We investigate hyperon emergence in neutron star matter using the $SU(3)$ parity doublet model with chiral representation $(3,\bar{3}) + (\bar{3},3)$. This framework naturally incorporates chiral symmetry restoration and provides a systematic description of baryon masses in dense matter through the interplay...

18. Chiral effective Lagrangian at finite density and temperature with broken scale invariance

Luca Passarella (Politecnico di Torino and INFN)

29/04/2026, 16:15

We present an equation of state for strongly interacting matter applicable over a broad range of temperatures and baryon densities. This is based on an effective Lagrangian with explicitly broken chiral symmetry, where scale-invariance breaking is regulated by a dilaton field that mimics the dynamics of the gluon condensate in quantum chromodynamics (QCD). The model includes baryons and mesons...