在膨胀夸克-胶子等离子体相变过程中包含夸克碎块效应的动力学

Dynamics of Phase Transition Including Quark-Fragment Effects foran Expansion Quark-Gluon Plasma

数值求解了（１＋１）维的，包含有夸克碎块效应源项的相对性流体力学方程，分析了极端高能下核碰撞时可能产生的相变过程中特征物理量：体系的能量密度、流速快度和重子数密度的演化。源项中的夸克碎块效应则是通过唯象ＳＵ（３）弦模型味动力学进行描写的。数值结果与Ｋａｊａｎｔｉｅ等人的结果进行了比较，也即间接地与实测结果相一致，模型物理图象清晰。

dimensional relativistic hydrodynamics equation with a source term iacludiag the quarktfragment effects a is numerically solved and the evolution of the energy density, flow rapidity and baryon number density as the characteristic values of the phase transition which is possible to be produced in the nuclear collisions at extreme high energy are also analysed. The quark-fragment effects in the source term are described by using the phenomenal SU(3 ) string model with a flavor dynamics. The numerical results are compared with Kajantie's, s data. It illustrates indirectly that the results are in agreement with the experimental data. The physics picture of our model presented in this paper shows that this phenomenological self-consistent model is reasonable.