超相对论重离子碰撞的初始态
摘要
我们提出了一个在超相对论重离子碰撞开始时能量、压力和流速分布的模型，该模型可用作流体动力学计算的初始条件。我们的模型考虑了靶和弹核的重子反冲，这源于碰撞中产生的有效场中部分子的加速。RHIC能量的典型场强（弦张力）约为5-12 GeV/fm，这使我们能够谈论“弦绳”。结果表明，QGP形成一个倾斜的盘，使得最大压力梯度的方向保持在反应平面内，但偏离了束流方向和通常的横向流方向。这样的初始条件可能导致“反流”或“第三流分量”的产生。
引用
@article{arxiv.hep-ph/0010307,
title = {The initial state of ultra-relativistic heavy ion collision},
author = {V. K. Magas and L. P. Csernai and D. D. Strottman},
journal= {arXiv preprint arXiv:hep-ph/0010307},
year = {2009}
}
备注
28 pages, 9 figures. The presentation has been changed considerably. Some parts of the model have been reformulated, what led to modifications in several equations: (20-38), Apps. A, B. All the figures have been changed from 100 GeV/nucl initial energy to the achieved RHIC energy of 65 GeV/nucl. The last subplots in the Figs. 3, 4, 5, 6 present E=T^{00} in the laboratory frame now, instead of the energy density in the local rest frame, e, shown in the initial version. We also added the App. C to clarify the transformation from space-time to lightcone coordinates and back