论文标题
流动力学前的进化及其对夸克 - 胶状等离子体特征的影响
Pre-hydrodynamic evolution and its impact on quark-gluon plasma signatures
论文作者
论文摘要
重型离子碰撞的最先进的流体动力模型在描述非常早期的流动力学阶段的描述中具有相当大的理论模型。我们添加了一个新的计算模块，k $ _ \ mathrm {t} $ ISO，它基于相对论的玻尔兹曼方程，并在各向同性化时间近似中对碰撞进行了相对论的玻尔兹曼方程。作为一种新颖性，k $ _ \ mathrm {t} $ ISO允许纳入和演变初始状态动量各向异性。要维持计算效率K $ _ \ MATHRM {t} $ ISO假定严格的纵向增强不变性，并允许碰撞以同时化横向动量。我们使用它来探索在杂水动力学阶段期间对初始状态动量各向异性和微观散射的相对论重离子碰撞中测得的耐达的观察力的灵敏度。
State-of-the-art hydrodynamic models of heavy-ion collisions have considerable theoretical model uncertainties in the description of the very early pre-hydrodynamic stage. We add a new computational module, K$_\mathrm{T}$Iso, that describes the pre-hydrodynamic evolution kinetically, based on the relativistic Boltzmann equation with collisions treated in the Isotropization Time Approximation. As a novelty, K$_\mathrm{T}$Iso allows for the inclusion and evolution of initial-state momentum anisotropies. To maintain computational efficiency K$_\mathrm{T}$Iso assumes strict longitudinal boost invariance and allows collisions to isotropize only the transverse momenta. We use it to explore the sensitivity of hadronic observables measured in relativistic heavy-ion collisions to initial-state momentum anisotropies and microscopic scattering during the pre-hydrodynamic stage.
