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arXiv 1504.03201hep-phhep-thnucl-th
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旋转夸克-胶子等离子体中的手征涡旋波和诱导味电荷输运

Chiral vortical wave and induced flavor charge transport in a rotating quark-gluon plasma

Yin Jiang, Xu-Guang Huang, Jinfeng Liao

摘要:

我们证明了在含有手征费米子的旋转流体系统中存在一种新的无隙集体激发,称为手征涡旋波(CVW)。CVW的微观起源于量子反常,宏观起因于涡旋效应引起的矢量和轴向电荷涨落之间的相互作用。从流体动力学方程和手征动力学理论得到的波动方程,其解决方案显示从不同的初始条件的非平凡CVW诱导的电荷输运。以重离子碰撞中的旋转夸克-胶子等离子体为例,给出了QGP中诱导味四极的形成,并估计了实验上可以测量到的λ重子的椭圆流分裂效应.

英文摘要:

We show the existence of a new gapless collective excitation in a rotating fluid system with chiral fermions, named as the Chiral Vortical Wave (CVW). The CVW has its microscopic origin at the quantum anomaly and macroscopically arises from interplay between vector and axial charge fluctuations induced by vortical effects. The wave equation is obtained both from hydrodynamic current equations and from chiral kinetic theory and its solutions show nontrivial CVW-induced charge transport from different initial conditions. Using the rotating quark-gluon plasma in heavy ion collisions as a concrete example, we show the formation of induced flavor quadrupole in QGP and estimate the elliptic flow splitting effect for Lambda baryons that may be experimentally measured.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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