论文标题
超越唤醒：不断扩展的夸克 - 杜伦等离子体的非流动力反应
Beyond the wake: non-hydrodynamic response of an expanding Quark-gluon plasma
论文作者
论文摘要
我们研究了描述了由Bjorken扩展Quark-Gluon等离子体（QGP）引起的能量密度演变的响应函数。我们比较了在松弛时间近似下求解线性化玻尔兹曼方程与粘性流体动力学的结果。虽然长期限制了响应成为流体动力学，但在中间的时间中，非流动力响应很重要，而波长的激发大于松弛时间$ 1/τ_{r} $的逆向。因此，可以使用对喷射诱导的培养基激发敏感的可观察物来探索QGP在“介质尺度”下的特性。
We study the response function which describes the evolution of energy density induced by an initial disturbance for a Bjorken-expanding quark-gluon plasma (QGP). We compare the results from solving linearized Boltzmann equation under the relaxation time approximation with those from viscous hydrodynamics. While in long time limit the response becomes hydrodynamics, the non-hydrodynamic response is important at intermediate times when excitations of wavelength larger than the inverse of the relaxation time $1/τ_{R}$ are not fully damped. Therefore observables sensitive to the jet-induced medium excitations might be employed to explore the properties of QGP at the "mesoscopic scale".
