Particlization in hybrid models

Particlization in hybrid models
复制标题

混合模型中的颗粒化

DOI:
10.1140/epja/i2012-12171-9
复制
发表时间:
2012
期刊:
The European Physical Journal A
影响因子:
--
通讯作者:
H. Petersen
H. Petersen
中科院分区:
--
文献类型:
--
作者:
P. Huovinen;H. Petersen

文献摘要

被引文献

相似文献

在混合模型中,结合了流体力学和输运方法来描述重离子碰撞的不同阶段,流体到单个粒子的转化,粒子化,是一个不是微不足道的技术问题。我们详细描述了如何在3+1维模型中找到粒子化超曲面,以及如何对使用Cooper-Frye过程计算的粒子分布进行采样,以创建粒子系综来作为传输阶段的初始状态。我们还讨论了负贡献在库珀-弗莱过程中的作用和大小。
In hybrid models, which combine hydrodynamical and transport approaches to describe different stages of heavy-ion collisions, conversion of fluid to individual particles, particlization, is a non-trivial technical problem. We describe in detail how to find the particlization hypersurface in a 3+1 dimensional model, and how to sample the particle distributions evaluated using the Cooper-Frye procedure to create an ensemble of particles as an initial state for the transport stage. We also discuss the role and magnitude of the negative contributions in the Cooper-Frye procedure.