论文标题
在常见的微观动力学描述中的集体和耗散效应
Collective and dissipative effects in a common microscopic dynamical description
论文作者
论文摘要
根据能量状态，重离子碰撞的动力学揭示了各种不同的机制，这些机制归因于集体和耗散效应的结合。半古典的方法已经成功地描述了Fermi-Energies的混乱制度，但是当扩展到集体行为时，它们逐渐失去精确度，并且通常在动力学中低能功能变得更加决定性时。为了改善此描述，我们提出了从TDHF方案开始的理论方法。具有双重目标的具有移动基础函数的量子表示。首先，实现简化的解决方案来处理时间的演变。其次，引入了均值野外扩展和随机贡献。提出了在低到费米能量周围的事件能量的核碰撞。
Depending on the energy regime, the dynamics of heavy-ion collisions reveals a variety of different mechanisms which are attributed to the combination of collective and dissipative effects. Semi-classical approaches have been successful in describing chaotic regimes at Fermi-energies but they gradually lose precision when extending to collective behaviour and in general when low-energy features become more determinant in the dynamics. To improve on this description, we propose a theoretical approach starting from the TDHF scheme. A quantum representation with a moving basis function has been worked out with a double aim. Firstly, achieving a simplified solution to handle the evolution in time. Secondly, introducing beyond-mean-field extensions and stochastic contributions. Applications to nuclear collisions at incident energies around low to Fermi energy are presented.
