(11) Shi-Zheng Yang, Xin-Qing Xie, Shi Pu, Jian-Hua Gao, Qun Wang, Spin alignment of vector mesons in local equilibrium by Zubarev's approach, arXiv:2412.19400

(10) Anum Arsla, Wen-Bo Dong, Guo-Liang Ma, Shi Pu, Qun Wang, A solvable model for spin polarizations with flow-momentum correspondence, arXiv:2411.17285 

(9) Shi-Zheng Yang, Jian-Hua Gao, Shi Pu, Corrections from spacetime dependent electromagnetic fields to Wigner functions and spin polarization, Phys.Rev.D 111 (2025) 3, 036013

(8) Shuo Fang, Shi Pu, Collisional corrections to spin polarization from quantum kinetic theory using Chapman-Enskog expansion, arXiv:2408.09877, Phys. Rev. D 111, 034015 (2025)

We have investigated the collisional corrections to the spin polarization pseudovector δPμ using quantum kinetic theory in Chapman-Enskog expansion. We derive the spin Boltzmann equation incorporating the Møller scattering process. We further consider two distinct scenarios using hard thermal loop approximations for simplification. In scenario (I), the vector charge distribution function is treated as off equilibrium under the validity domain of gradient expansion. Remarkably, the polarization induced by thermal vorticity and shear viscous tensors are modified, but δPμ in this scenario does not depend on the coupling constant. In scenario (II), the vector charge distribution function is assumed to be in local thermal equilibrium. Then collisional corrections δPμ in this scenario are at O(ℏ2∂2). Additionally, we evaluate the δPμ using the relaxation time approach for comparative analysis. Our results establish the theoretical framework necessary for future numerical investigations on the interaction corrections to spin polarization.

(7) Cong Yi, Xiang-Yu Wu, Jie Zhu, Shi Pu, Guang-You Qin, Spin polarization of  Lambda hyperons along beam direction in p+Pb collisions at \sqrt{s_{NN}} = 8.16 TeV, arXiv: 2408.04296

(6) Dong-Lin Wang, Li Yan, Shi Pu, Late-time asymptotic solutions, attractor, and focusing behavior of spin hydrodynamics, arXiv: 2408.03781, Phys.Rev.D 111 (2025) 3, 034033

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 the late-time and early time attractors for the decay rate of spin density. Additionally, we report the focusing behavior in spin hydrodynamics, which has not been found in conventional relativistic hydrodynamics in Bjorken expansion. Our findings suggest that spin density can be treated as a conventional hydrodynamic variable at late times under certain conditions.

(5) Jin-Yu Hu, Shu Lin, Shi Pu, Qun Wang, Light nuclei photoproduction in relativistic heavy ion ultraperipheral collisions, arXiv:2407.06091

(4) Shu Lin, Jin-Yu Hu, Hao-jie Xu, Shi Pu, Qun Wang, Nuclear deformation effects in photoproduction of rho mesons in ultraperipheral isobaric collisions, arXiv:2405.16491

(3) Xiang Ren, Chen Yang, Dong-Lin Wang, Shi Pu, Thermodynamic stability in relativistic viscous and spin hydrodynamics, arXiv:2405.03105, Phys.Rev.D 110 (2024) 3, 034010

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 thermodynamic stability conditions for minimal causal extended second-order spin hydrodynamics in canonical form, both with and without viscous tensors. Without viscous tensors, the constraints from thermodynamic stability exactly match those from linear mode analysis. In the presence of viscous tensors, the thermodynamic stability imposes more stringent constraints than those obtained from linear mode analysis. Our results suggest that conditions derived from thermodynamic stability analysis can guarantee both causality and stability in linear mode analysis.

(2) Francesco Becattini,Matteo Buzzegoli,Takafumi Niida,Shi Pu, Ai-Hong Tang,Qun Wang, Spin polarization in relativistic heavy-ion collisions, arXiv: 2402.04540, Invited Review for QGP 6, Int.J.Mod.Phys.E 33 (2024) 06, 2430006

Polarization has opened a new physics chapter in relativistic heavy-ion collisions. Since the first prediction and experimental observation of global spin polarization, a lot of progress has been made in understanding its features, both at experimental and theoretical levels. In this paper, we give an overview on the recent advances in this field. The covered topics include a review of measurements of global and local spin polarization of hyperons and the global spin alignment of vector meson’s. We account for the basic theoretical framework to describe spin polarization in a relativistic fluid such as the Quark–Gluon Plasma, including statistical quantum field theory and local thermodynamic equilibrium, spin hydrodynamics, relativistic kinetic theory with spin and coalescence models.

(1) Yi-Liang Yin, Wen-Bo Dong , Jin-Yi Pang, Shi Pu, Qun Wang, The spin alignment of rho mesons in a pion gas, arXiv: 2402.03672，Phys.Rev.C 110 (2024) 2, 024905