Study of the Instabilities of Collisionless Systems on the Basis of Stochastic Trajectories
Journal of Experimental and Theoretical Physics Letters (JETP Letters)
, E-ISSN: 1090-6487
Novosibirsk National Research University
Budker Institute of Nuclear Physics SB RAS
Institute of Computational Technologies, Siberian Branch of the Russian Academy of Sciences
We propose a practical method for distinguishing stochastic and regular subsystems in the entire set of particles for numerical modeling of the development of physical instabilities in collisionless systems with self-consistent fields. The method of subdividing the phase space into subsystems is based on the comparison of the results of two computational experiments with identical initial conditions but different realizations of rounding errors. An example of establishing the spatial and temporal domains of the development of collective instability and determining the instability increments is offered by a gravitating disk.