Chiral anomaly and local polarization effect from the quantum kinetic approach.
A power expansion scheme is set up to determine the Wigner function that satisfies the quantum kinetic equation for spin-1/2 charged fermions in a background electromagnetic field. Vector and axial-vector current induced by magnetic field and vorticity are obtained simultaneously from the Wigner function. The chiral magnetic and vortical effect and chiral anomaly are shown as natural consequences of the quantum kinetic equation. The axial-vector current induced by vorticity is argued to lead to a local polarization effect along the vorticity direction in heavy-ion collisions.
School of Space Science and Physics, Shandong University at Weihai, Weihai 264209, China.
Jian-Hua
JH
Gao
Zuo-Tang
ZT
Liang
Shi
S
Pu
Qun
Q
Wang
Xin-Nian
XN
Wang