Kinetic equations for massive Dirac fermions in electromagnetic field with non-Abelian Berry phase

Kinetic equations for massive Dirac fermions in electromagnetic field with non-Abelian Berry phase
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非阿贝尔贝里相电磁场中大质量狄拉克费米子的动力学方程

DOI:
10.1103/physrevd.89.094003
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发表时间:
2013-12
期刊:
Physical Review D - Particles, Fields, Gravitation and Cosmology
影响因子:
--
通讯作者:
Wang, Qun
Wang, Qun
中科院分区:
其他
文献类型:
--
作者:
Chen, Jiunn-Wei;Pang, Jin-yi;Pu, Shi;Wang, Qun

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我们推导了电磁场中大质量狄拉克费米子的半经典有效作用和动力学方程。非阿贝尔贝里相结构由具有正能量的大质量费米子的两个螺旋态产生。经典自旋作为 SU(2) 螺旋空间中的矢量出现。推导了费米子数和经典自旋的连续性方程。费米子数守恒,而自旋电荷不因反常而守恒。先前关于费米子手性磁效应系数和手性极限中的轴向电流的结果可以在包括反费米子贡献后重现。这为费米子质量产生的狄拉克费米子的新兴自旋和非阿贝尔贝里相提供了一个例子。
We derive a semiclassical effective action and the kinetic equation for massive Dirac fermions in electromagnetic fields. The non-Abelian Berry phase structure emerges from two helicity states of massive fermions with positive energy. The classical spin emerges as a vector in SU(2) helicity space. The continuity equations for the fermion number and the classical spin are derived. The fermion number is conserved while the spin charge is not conserved by anomaly. Previous results about the coefficients of the chiral magnetic effect for the fermion and axial currents in the chiral limit can be reproduced after including the antifermion contributions. This provides an example for the emerging spin and non-Abelian Berry phase of Dirac fermions arising from the fermion mass.
DOI: 10.1136/bmj.323.7325.1375/a
发表时间: 2001-12
期刊: BMJ : British Medical Journal
影响因子: --
作者:
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