论文标题
密集夸克物质对格鲁族繁殖器的影响QC $ _2 $ d
Effects of Dense Quark Matter on Gluon Propagators in Lattice QC$_2$D
论文作者
论文摘要
Landau仪表中的横向和纵向GLUON传播器在非零夸克化学势$μ_Q$的两色晶格QCD中进行了研究。为所有正在研究的化学潜力值提供了繁殖器动量依赖性的参数化。我们发现，纵向传播器在非零$μ_Q$下被抑制红外，随着$μ_Q$的增加，抑制作用增加。横向传播器对$μ_Q$的依赖性相反：在$μ_Q$的情况下，它得到了增强。可以分别发现电筛分质量正在增加，而磁性筛选质量随着$μ_Q$的增加而减小。发现了从纵向传播器计算出的电筛分质量与先前根据Singlet静态Quark-Antiquark电位计算出的Debye质量的质量。我们讨论繁殖物对化学势的依赖性与弦张力的各自依赖性相关。此外，我们将两个繁殖器之间的差异视为动量的函数，并进行了有趣的观察。
The transverse and longitudinal gluon propagators in the Landau gauge are studied in the two-color lattice QCD at nonzero quark chemical potential $μ_q$. Parameterization of the momentum dependence of the propagators is provided for all values of chemical potential under study. We find that the longitudinal propagator is infrared suppressed at nonzero $μ_q$ with suppression increasing with increasing $μ_q$. The transverse propagator dependence on $μ_q$ was found to be opposite: it is enhanced at large $μ_q$. It is found, respectively, that the electric screening mass is increasing while the magnetic screening mass is decreasing with increasing $μ_q$. Nice agreement between the electric screening mass computed from the longitudinal propagator and the Debye mass computed earlier from the singlet static quark-antiquark potential was found. We discuss how the dependence of the propagators on the chemical potential correlates with the respective dependence of the string tension. Additionally, we consider the difference between two propagators as a function of the momentum and make interesting observations.
