4 papers · 1 filter
Spin alignment of vector mesons in local equilibrium by Zubarev's approach
Shi-Zheng Yang, Xin-Qing Xie, Shi Pu +2
We compute the element of the spin density matrix, denoted as and called the spin alignment, up to the second order of the gradient expansion in local equilibrium by…
Self-consistent constraints on the collision terms in quantum kinetic theory
Shi-Yuan Wu, Jian-Hua Gao
We derive self-consistent constraint conditions for collision terms in quantum kinetic theory using the Wigner function formalism. We present specific solutions for these collision…
Corrections from space-time dependent electromagnetic fields to Wigner functions and spin polarization
Shi-Zheng Yang, Jian-Hua Gao, Shi Pu
We have derived the Wigner equations at global equilibrium with constant vorticity but space-time dependent electromagnetic fields up to second order in semiclassical expansion. We…
Second-order chiral kinetic theory from Wigner function approach
Shi-Zheng Yang, Shu-Xiang Ma, Jian-Hua Gao
We present a systematic method to derive the chiral kinetic theory from the Wigner equations based on quantum field theory order by order. We take special effort to derive the chir…