Towards Better Integrators for Dissipative Particle Dynamics Simulations

Details Towards Better Integrators for Dissipative Particle Dynamics Simulations Towards Better Integrators for Dissipative Particle Dynamics Simulations

2000-10-16

arxiv.org/abs/cond-mat/0010219v1

Phys. Rev. E 62/6 (2000) R7611-7614

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures, 2 tables, accepted for publication in Phys. Rev. E (Rapid Communication), tentative publication issue: 01

Scientific paper

10.1103/PhysRevE.62.R7611

Coarse-grained models that preserve hydrodynamics provide a natural approach to study collective properties of soft-matter systems. Here, we demonstrate that commonly used integration schemes in dissipative particle dynamics give rise to pronounced artifacts in physical quantities such as the compressibility and the diffusion coefficient. We assess the quality of these integration schemes, including variants based on a recently suggested self-consistent approach, and examine their relative performance. Implications of integrator-induced effects are discussed.

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