标题： 部分子秀作为QGP中能量-动量沉积的来源及其在RHIC和LHC中冲击波形成的意义 显示英文标题

标题： Parton showers as sources of energy-momentum deposition in the QGP and their implication for shockwave formation at RHIC and at the LHC

摘要： 我们推导了来自初级快部分子及其介质诱导韧致辐射胶子的能量和动量传递到热化的夸克-胶子等离子体的分布。 我们的计算考虑了由此产生的色流之间的重要且迄今为止被忽略的量子干涉效应。 我们利用这一结果来获得介质吸收能量的速率作为时间的函数，并发现该速率因初级部分子与次级胶子之间的量子干涉而发生变化。 这种Landau-Pomeranchuk-Migdal型干涉对于重离子物理现象相关的时标上仍然存在。 我们进一步将新推导出的能量和动量沉积源耦合到线性化流体力学中，以获得夸克-胶子等离子体中实际部分子传播和分裂的介质整体响应。 我们发现，由于介质内大角度胶子发射的特征以及部分子喷注中能量沉积的多个来源，在重离子反应中由高能喷注形成明确的马赫锥的可能性不大。 显示英文摘要

摘要： We derive the distribution of energy and momentum transmitted from a primary fast parton and its medium-induced bremsstrahlung gluons to a thermalized quark-gluon plasma. Our calculation takes into account the important and thus far neglected effects of quantum interference between the resulting color currents. We use our result to obtain the rate at which energy is absorbed by the medium as a function of time and find that the rate is modified by the quantum interference between the primary parton and secondary gluons. This Landau-Pomeranchuk-Migdal type interference persists for time scales relevant to heavy ion phenomenology. We further couple the newly derived source of energy and momentum deposition to linearized hydrodynamics to obtain the bulk medium response to realistic parton propagation and splitting in the quark-gluon plasma. We find that because of the characteristic large angle in-medium gluon emission and the multiple sources of energy deposition in a parton shower, formation of well defined Mach cones by energetic jets in heavy ion reactions is not likely.