费米子系统Boltzmann-Langevin单体动力学的分岔
Bifurcations in Boltzmann-Langevin One Body dynamics for fermionic systems
摘要：
我们研究了在费米能量下描述中心核碰撞的动力学轨迹中分叉的发生。的反应动力学的定量描述内得到一个新的传输模型，在三维的Boltzmann-Langevin方程的解决方案的基础上，具有广泛的适用性耗散费米子动力学。在中心碰撞中形成的稀释系统被证明在两种能量上有利的机制之间波动：恢复到紧凑的形状或分解成几个片段。后者的结果可以连接到最近观察到的双峰分布的数量特征的碎裂过程，并可能建议新的调查。
英文摘要：
We investigate the occurrence of bifurcations in the dynamical trajectories depicting central nuclear collisions at Fermi energies. The quantitative description of the reaction dynamics is obtained within a new transport model, based on the solution of the Boltzmann-Langevin equation in three dimensions, with a broad applicability for dissipative fermionic dynamics. Dilute systems formed in central collisions are shown to fluctuate between two energetically favourable mechanisms: reverting to a compact shape or rather disintegrating into several fragments. The latter result can be connected to the recent observation of bimodal distributions for quantities characterising fragmentation processes and may suggest new investigations.
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