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Table 1
Overview of the integrators used in the numerical tests.
| Method | Description |
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| BLOCK | Conventional particle-based block time steps – positions of particles in lower time step bins are extrapolated when calculating the movement of particles in faster time step bins. |
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| HOLD | Individual timestepping method based on Hamiltonian splitting. Particles in different timestep bins interact by exchanging symmetric kicks (Pelupessy et al. 2012). |
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| CC | An implementation of the connected components splitting (Sect. 2.2). Iterative partitioning based on the connected components of the graph generated by the pairwise timestep criterion. |
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| CC_KEPLER | An extension of the CC method that uses a Kepler solver to evolve connected components with two particles (Sect. 3.2). |
Notes. The implementations share a significant amount of the code and data structures used for storing system state, calculating time steps, and evaluating (partial) forces.
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