Under the relaxation time approximation of the Boltzmann equation, we compute the viscosities of the system to leading power in $T/\mu_B$ expansion and establish a relation between the thermodynamic potential and transport coefficients, including bulk viscosity ($\zeta$) and shear viscosity ($\eta$). It is found that hydrodynamic stability ($\zeta>0$) imposes additional constraints on the thermodynamic potential. As an example, these relations are applied to the Walecka model. The fluid properties of the cold and dense nucleon matter are characterized by the dimensionless combination of viscosities times the quasi-Fermi momentum over the enthalpy. Furthermore, we discuss the implication of the stability condition on the range of applicability of the model.

Title: Effects of Initial Nucleon-Nucleon Correlations on Light Nuclei Production in Au+Au Collisions at $\sqrt{s_{NN}}$=3 GeVSpeaker: Qian-Ru LinTime: 21 March (Friday) 2025, 2:00 pmLocation: 9627Abstract: Light nuclei production in heavy-ion collisions serves as a sensitive probe of the QCD phase structure. In coalescence models, triton (Nt) and deuteron (Nd) yields depend on the spatial separation ...

I will present work done with my PhD supervisor, Dr. Michael Strickland, and our collaborators. I will discuss how we obtain suppression of heavy quarkonium states in the quark-gluon plasma (QGP) using the real-time quantum field theory (QFT) and open quantum system (OQS) approach. We relax the assumption of adiabatic approximation by solving the 3D Schrodinger equation in real time to compute quarkonium suppression dynamically. We introduce a framework called Heavy Quarkonium Quantum Dynamics (HQQD) which can be used to compute the dynamical suppression of heavy quarkonia propagating in the QGP using real-time in- medium quantum evolution. In the pRQCD and OQS approach, we derive and numerically solve a Lindblad-type evolution equation without jumps and with jumps that are accurate to next-to-leading order (NLO) in the binding energy over temperature (E/T).

We perform Bayesian inference of the magnetic field and the chemical potential of the holographic jet quenching model by comparing our theoretical calculations with experimental data for the nuclear modification factor $R_{AA}$ of the large transverse momentum hadrons in different-centrality nucleus-nucleus collisions at 0.2, 2.76 and 5.02 TeV, respectively. The form of the holographic energy loss leads to a strong negative correlation between the magnetic field and the chemical potential after the calibration. The results suggest that the magnetic field and the chemical potential increase correspondingly with the increasing centrality, and they decrease with increasing colliding energy.