A stochastic Hamiltonian formulation applied to dissipative particle dynamics

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In this paper, a stochastic Hamiltonian formulation (SHF) is proposed and applied to dissipative particle dynamics (DPD) simulations. As an extension of Hamiltonian dynamics to stochastic dissipative systems, the SHF provides necessary foundations and great convenience for constructing efficient numerical integrators. As a first attempt, we develop the Störmer–Verlet type of schemes based on the SHF, which are structure-preserving for deterministic Hamiltonian systems without external forces, the dissipative forces in DPD. Long-time behaviour of the schemes is shown numerically by studying the damped Kubo oscillator. In particular, the proposed schemes include the conventional Groot–Warren's modified velocity-Verlet method and a modified version of Gibson–Chen–Chynoweth as special cases. The schemes are applied to DPD simulations and analysed numerically.

Original languageEnglish
Article number127126
JournalApplied Mathematics and Computation
Publication statusPublished - 2022 Aug 1


  • Dissipative particle dynamics
  • Hamiltonian mechanics
  • Stochastic differential equations
  • Störmer–Verlet methods

ASJC Scopus subject areas

  • Computational Mathematics
  • Applied Mathematics


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