Sensitivity of the mean field dynamics within quantum molecular dynamics

Started from the static state with certain macroscopic stable and instable conditions, we have studied the behavior of the deterministic chaos by propagating the systems under only the action of the consistent mean field describing the real nuclear reaction at intermediate energy without the randomn...

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Bibliographic Details
Published in:Nuclear physics. A 2020-12, Vol.1004, p.122034, Article 122034
Main Authors: Xing, Yong-Zhong, Fu, Wei-Chen, Liu, Xiao-Bin, Lu, Fei-Ping, Zhang, Hong-Fei, Zheng, Yu-Ming
Format: Article
Language:English
Subjects:
Excited finite nucleus
Lyapunov exponent
Mean field dynamics
Quantum molecular dynamics
Sensitivity
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Summary:Started from the static state with certain macroscopic stable and instable conditions, we have studied the behavior of the deterministic chaos by propagating the systems under only the action of the consistent mean field describing the real nuclear reaction at intermediate energy without the randomness caused by the random collisions between nucleons. The disassembly of the system including evaporation and fragmentation occurring in the real nuclear reaction have obtained and the nonlinear characteristics of the dynamics have displayed. The sensitivity of the nonlinear mean dynamics to the initial conditions, in particular, to the initial spatial distribution of the nucleons at certain thermodynamical conditions, has been confirmed numerically. Our results and research method combining the static and dynamic prove strongly that the deterministic chaos is a bridge between dynamics and statistics.
ISSN:0375-9474
DOI:10.1016/j.nuclphysa.2020.122034