204 citations · 1.4k across the 31 of their papers we have counts for
14 papers · 1 filter
Global polarization and spin alignment in heavy-ion collisions: past, present and future
Wen-Bo Dong, Xin-Li Sheng, Yi-Liang Yin +1
We give a brief overview on global polarization and spin alignment in heavy ion collisions. The current theoretical understandings on global polarization of hyperons and the global…
Momentum dependence of meson's spin alignment
Xin-Li Sheng, Shi Pu, Qun Wang
We study the rapidity and azimuthal angle dependences of the global spin alignment for mesons with respect to the reaction plane in Au+Au collisions at RHIC by the rel…
Electric and magnetic conductivities in magnetized fermion systems
Hao-Hao Peng, Xin-Li Sheng, Shi Pu +1
In Wigner function approach with relaxation time approximation, we calculate electric and magnetic conductivities of a fermion system in the strong magnetic field. The linear respo…
Mass splitting and spin alignment for mesons in a magnetic field in NJL model
Xin-Li Sheng, Shu-Yun Yang, Yao-Lin Zou +1
Based on the Nambu-Jona-Lasinio (NJL) model, we develop a framework for calculating the spin alignment of vector mesons and applied it to study mesons in a magnetic field. We c…
Spin alignment of vector mesons in heavy-ion collisions
Xin-Li Sheng, Lucia Oliva, Zuo-Tang Liang +2
Polarized quarks and antiquarks in high-energy heavy-ion collisions can lead to the spin alignment of vector mesons formed by quark coalescence. Using the relativistic spin Boltzma…
Lorentz-covariant kinetic theory for massive spin-1/2 particles
Xin-Li Sheng, Qun Wang, Dirk H. Rischke
We construct a matrix-valued spin-dependent distribution function (MVSD) for massive spin-1/2 fermions and study its properties under Lorentz transformations. Such transformations…
Space-average electromagnetic fields and EM anomaly weighted by energy density in heavy-ion collisions
Irfan Siddique, Xin-Li Sheng, Qun Wang
We study the space-average electromagnetic (EM) fields weighted by the energy density in the central regions of heavy ion collisions. These average quantities can serve as a barome…
From Kadanoff--Baym to Boltzmann equations for massive spin-1/2 fermions
Xin-Li Sheng, Nora Weickgenannt, Enrico Speranza +2
We derive Boltzmann equations for massive spin-1/2 fermions with local and nonlocal collision terms from the Kadanoff--Baym equation in the Schwinger--Keldysh formalism, properly a…
Derivation of the nonlocal collision term in the relativistic Boltzmann equation for massive spin-1/2 particles from quantum field theory
Nora Weickgenannt, Enrico Speranza, Xin-li Sheng +2
We derive the Boltzmann equation and the collision kernel for massive spin-1/2 particles, using the Wigner-function formalism and employing an expansion in powers of . The p…
Electromagnetic fields from the extended Kharzeev-McLerran-Warringa model in relativistic heavy-ion collisions
Yi Chen, Xin-Li Sheng, Guo-Liang Ma
Based on the Kharzeev-McLerran-Warringa (KMW) model that estimates strong electromagnetic (EM) fields generated in relativistic heavy-ion collisions, we generalize the formulas of…
Improved quark coalescence model for spin alignment and polarization of hadrons
Xin-Li Sheng, Qun Wang, Xin-Nian Wang
We propose an improved quark coalescence model for spin alignment of vector mesons and polarization of baryons by spin density matrix with phase space dependence. The spin density…
Wigner Function for Spin-1/2 Fermions in Electromagnetic Fields
Xin-Li Sheng
We study the Wigner function for massive spin-1/2 fermions in electromagnetic fields. Dirac form kinetic equation and Klein-Gordon form kinetic equation are obtained for the Wigner…
What can we learn from global spin alignment of meson in heavy-ion collisions?
Xin-Li Sheng, Lucia Oliva, Qun Wang
We propose that a significant positive deviation from 1/3 for the spin density matrix element of the meson may indicate the existence of a mean field of the meson…
Electromagnetic fields with electric and chiral magnetic conductivities in heavy ion collisions
Hui Li, Xin-li Sheng, Qun Wang
We derive analytic formula for electric and magnetic fields produced by a moving charged particle in a conducting medium with the electric conductivity and the chiral magnetic…