标题： 摩擦对取向混乱的手性凝聚形成的影响 显示英文标题

标题： Effect of friction on disoriented chiral condensate formation

摘要： 我们研究了摩擦效应对DCC域形成的影响。我们用猝灭初态条件求解O(4)场的动力学牛顿方程。初始场以高斯形式随机分布。在一维膨胀中，平均来说，无法形成大的DCC域。然而，在某些特定轨道上，可能会出现大的不稳定性。引入摩擦后，这种可能性也会大大降低。但是，如果摩擦力很大，系统可能会过阻尼，然后在某些事件中有可能形成大的DCC域。 显示英文摘要

摘要： We have investigated the effect of friction on the DCC domain formation. We solve the Newton equation of motion for the O(4) fields, with quenched initial condition. The initial fields are randomly distributed in a Gaussian form. In one dimensional expansion, on the average, large DCC domains can not be formed. However, in some particular orbits, large instabilities may occur. This possibility also greatly diminishes with the introduction of friction. But, if the friction is large, the system may be overdamped and then, there is a possibility of large DCC domain formation in some events.