Tuesday, March 6, 2012

1203.0725 (Jian-Hua Gao et al.)

Chiral anomaly and local polarization effect from quantum kinetic
approach
   [PDF]

Jian-Hua Gao, Zuo-Tang Liang, Shi Pu, Qun Wang, Xin-Nian Wang
Induced vector and axial vector currents are derived from solving the quantum kinetic equations for spin-1/2 charged fermions in a constant external field via a consistent iterative scheme. Chiral current anomaly $\partial_\mu j_5^\mu = C E\cdot B$, vector current conservation $\partial_\mu j^\mu =0$ and the energy-momentum conservation $\partial_\mu T^{\mu\nu}=QF^{\nu\rho} j_\rho$ are all natural consequences of the solutions. This provides an independent derivation of the chiral anomaly from kinetic approach. The induced chiral current from vorticity is argued to lead to a local polarization effect along the vorticity direction in heavy ion collisions.
View original: http://arxiv.org/abs/1203.0725

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