Linearly polarized gluons and axial charge fluctuations in the glasma

被引：37
作者：
Lappi, Tuomas [1 ,2 ]
Schlichting, Soren [3 ]
机构：
[1] Univ Jyvaskyla, Dept Phys, POB 35, Jyvaskyla 40014, Finland
[2] Univ Helsinki, Helsinki Inst Phys, POB 64, FIN-00014 Helsinki, Finland
[3] Univ Washington, Dept Phys, Seattle, WA 98195 USA
来源：
PHYSICAL REVIEW D | 2018年 / 97卷 / 03期
基金：
芬兰科学院; 欧洲研究理事会;
关键词：
NUCLEAR COLLISIONS; ENERGY DENSITY; FLOW; HYDRODYNAMICS; EVOLUTION;
D O I：
10.1103/PhysRevD.97.034034
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We calculate the one- and two-point correlation functions of the energy density and the divergence of the Chern-Simons current in the nonequilibrium glasma state formed in a high-energy nuclear collision. We show that the latter depends on the difference of the total and linearly polarized gluon transverse momentum distributions. Since the divergence of the Chern-Simons current provides the source of axial charge, we infer information about the statistical properties of axial charge production at early times. We further develop a simple phenomenological model to characterize axial charge distributions in terms of distributions of the energy density.
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页数：22
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