Sensitivity of the mean field dynamics within quantum molecular dynamics

Nuclear Physics A(2020)

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Abstract
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.
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Key words
Sensitivity,Lyapunov exponent,Mean field dynamics,Excited finite nucleus,Quantum molecular dynamics
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