The 12th Circum-Pan-Pacific Symposium on High Energy Spin Physics

Session

Parallel session B

Nov 11, 2024, 4:25 PM

Birch Room (Hefei Crowne Plaza)

Conveners

Parallel session B

• Xu-Guang Huang

4. Effect of Coriolis force on the shear viscosity of quark matter: A nonrelativistic description

Cho Win Aung (Indian Institute of Technology Bhilai)

11/11/24, 4:25 PM

Contributed

Shear viscosity becomes anisotropic in a rotating medium. It is discovered here that for rotating thermalized quantum systems such as those created in relativistic heavy-ion collisions, the coefficient of shear viscosity breaks up into five independent components. Similar phenomena were also discovered for quark-gluon plasma in the presence of the magnetic field. Like the Lorentz force at a...

14. Measurements of Global and Local Polarization of Hyperons in Heavy Ion Collisions from STAR

Dr Xingrui Gou (Shandong University)

11/11/24, 4:45 PM

Contributed

The observation of hyperon polarization has revealed the existence of large vorticities in the medium created by heavy-ion collisions. Global polarization indicates vorticities perpendicular to the reaction plane due to the system's orbital angular momentum.
Using the high-statistics data collected by the STAR experiment during the RHIC BES-II program with upgraded detector systems, we...

61. Bell-Clauser-Horne Inequalities and Generalized Quantum Measurements in Spin-Correlated Hyperon-Antihyperon Decays: A Framework for Probing Quantum Nonlocality in Spin Physics

Dr Yangguang Yang (Institute of Modern Physics, Chinese Academy of Sciences)

11/11/24, 5:05 PM

Contributed

Quantum nonlocality, a fundamental feature of quantum mechanics, is frequently associated with the experimental violation of Bell-Clauser-Horne (Bell-CH) inequalities. We present a set of novel methods for the rearrangement and linear inequalities to derive a broad class of Bell-CH inequalities, which can be violated by particular quantum-entangled states. The rapid advancements in Quantum...

7. Late-time asymptotic solutions, attractor, and focusing behavior of spin hydrodynamics

Dong-Lin Wang (USTC)

11/11/24, 5:25 PM

Contributed

We have investigated the late-time asymptotic solutions, attractor, and focusing behavior of minimal causal spin hydrodynamics in Bjorken expansion. Using the method of dominant balance, we derive the late-time asymptotic solutions of the evolution equation for spin density and identify the specific conditions necessary for the spin density to exhibit a power-law decay. We then analyze both...

9. Spin polarization of Lambda hyperons along beam direction in p+Pb collisions at s=8.16 TeV using hydrodynamic approaches

Cong Yi (USTC)

11/11/24, 5:40 PM

Contributed

We have implemented the 3+1 dimensional CLVisc hydrodynamics model with TRENTO-3D initial conditions to investigate the spin polarization of Lambda hyperons along the beam direction in p+Pb collisions at
sNN= 8.16 TeV. Following our previous theoretical framework based on quantum kinetic theory, we consider three different scenarios: Lambda equilibrium, s quark equilibrium, and iso-thermal...

10. Spin polarization and spin alignment from quantum kinetic theory with self-energy corrections

Shuo Fang (USTC)

11/11/24, 5:55 PM

Contributed

We derive the quantum kinetic theory for massive fermions with collision terms and self-energy corrections based on quantum field theory. We adopt an effective power-counting scheme with \hbar expansion to obtain the leading-order perturbative solutions of the vector and axial Wigner functions and the corresponding kinetic equations. We observe that both the on-shell relation and the structure...

46. Bell-CH inequality and spin correlation

Yangguang Yang

Contributed

11. Causality and stability analysis for the minimal causal spin hydrodynamics

Xin-Qing Xie (USTC)

Contributed

We perform the linear analysis of causality and stability for a minimal extended spin hydrodynamics up to second order of the gradient expansion. The first order spin hydrodynamics, with a rank-3 spin tensor being antisymmetric for only the last two indices, are proved to be acausal and unstable. We then consider the minimal causal spin hydrodynamics up to second order of the gradient...

5. Effect of Coriolis force on the electrical conductivity of quark matter: a non-relativistic description

ASHUTOSH DWIBEDI (IIT Bhilai)

Contributed

Rotating quarks and hadronic systems, produced in peripheral heavy ion collisions, can experience Coriolis force and other forces due to rotational motion. Considering only the effect of Coriolis force, we have calculated the electrical conductivity for non-relativistic rotating matter using the relaxation time approximation under the Boltzmann transport equation. A similarity in mathematical...

8. Thermodynamic stability in relativistic viscous and spin hydrodynamics

Xiang Ren (USTC)

Contributed

We have applied thermodynamic stability analysis to derive the stability and causality conditions for conventional relativistic viscous hydrodynamics and spin hydrodynamics. We obtain the thermodynamic stability conditions for second-order relativistic hydrodynamics with shear and bulk viscous tensors, finding them identical to those derived from linear mode analysis. We then derive the...