论文标题
在有限的化学电位处探索党相位的党相位的阶段
Exploring the partonic phase at finite chemical potential in and out-of equilibrium
论文作者
论文摘要
我们研究了Baryon化学势$μ_b$对平衡和外部夸克 - 杜伦 - 铂（QGP）性质的影响。在平衡中对QGP的描述基于来自动力学的准粒子模型（DQPM）的有效传播器和耦合，该模型（DQPM）是匹配的，该模型是从lattice量子量子动力学（QCD）中重现反登录温度$ t_c $上方的partsononic System $ T_C $的状态。我们计算运输系数，例如剪切粘度$η$和散装粘度$ζ$比熵密度$ s $，即$η/s $和$η/s $和$ζ/s $在$（t，μ_b）$平面中，并与其他型号结果相比，可与其他型号相比。 QGP的平衡研究是通过明确计算在实际温度$ $ t $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $°b中，通过明确计算党派的总和差分派对横切截面（基于DQPM传播器和耦合），在党派部门进行扩展的均衡研究。其$μ_b$依赖关系的痕迹在不同的可观察力中进行了相对论重型离子碰撞，重点是在能量范围7.7 Gev $ \ le \ le \ le \ sqrt {s_ {s_ {nn}}} \ le 200 $ geev中的定向和椭圆流量系数$ v_1，v_2 $。
We study the influence of the baryon chemical potential $μ_B$ on the properties of the Quark-Gluon-Plasma (QGP) in and out-of equilibrium. The description of the QGP in equilibrium is based on the effective propagators and couplings from the Dynamical QuasiParticle Model (DQPM) that is matched to reproduce the equation-of-state of the partonic system above the deconfinement temperature $T_c$ from lattice Quantum Chromodynamics (QCD). We calculate the transport coefficients such as the ratio of shear viscosity $η$ and bulk viscosity $ζ$ over entropy density $s$, i.e., $η/s$ and $ζ/s$ in the $(T,μ_B)$ plane and compare to other model results available at $μ_B =0$. The out-of equilibrium study of the QGP is performed within the Parton-Hadron-String Dynamics (PHSD) transport approach extended in the partonic sector by explicitly calculating the total and differential partonic scattering cross sections (based on the DQPM propagators and couplings) evaluated at the actual temperature $T$ and baryon chemical potential $μ_B$ in each individual space-time cell of the partonic scattering. The traces of their $μ_B$ dependences are investigated in different observables for relativistic heavy-ion collisions with a focus on the directed and elliptic flow coefficients $v_1, v_2$ in the energy range 7.7 GeV $\le \sqrt{s_{NN}}\le 200$ GeV.
