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arXiv 1012.4364hep-ph
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核碰撞退禁闭相变的流体动力学模拟

Hydrodynamic modeling of deconfinement phase transition in nuclear collisions

I. N. Mishustin, A. V. Merdeev, L. M. Satarov

摘要:

用(3+1)维理想流体力学方法模拟了金核碰撞,碰撞能量为1 ~ 160 GeV/核子。初始状态由两个冷的洛伦兹增强核表示。两个状态方程:有和没有解除限制相变。我们研究了压缩的丰重子物质的动力学轨迹作为各种物理变量的函数。计算了集体流参数和强子谱参数。结果表明,退禁闭相变的存在导致椭圆流的增加和质子快度分布的平坦化。

英文摘要:

The (3+1)-dimensional ideal hydrodynamics is used to simulate collisions of gold nuclei with bombarding energies from 1 to 160 GeV per nucleon. The initial state is represented by two cold Lorentz-boosted nuclei. Two equations of state: with and without the deconfinement phase transition are used. We have investigated dynamical trajectories of compressed baryon-rich matter as functions of various thermodynamical variables. The parameters of collective flow and hadronic spectra are calculated. It is shown that presence of the deconfinement phase transition leads to increase of the elliptic flow and to flattening of proton rapidity distributions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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