Coarse graining of slow variables in dynamic simulations of soft matter

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A new Brownian dynamics model is presented to describe the coarse grain dynamics of particles with long-lived memory. Instead of solving a set of generalized Langevin equations we introduce a set of variables describing the slowly fluctuating thermodynamic state of the ignored degrees of freedom. These variables give rise to additional transient forces on the simulated particles, whose interpretation provides a new way of thinking about memory effects in soft-matter physics. We illustrate the proposed method by simulating shear thinning of synthetic resins.
Original languageEnglish
Article number28003
Number of pages5
JournalEurophysics letters
Issue number2
Publication statusPublished - 2007


  • IR-60842
  • METIS-241215


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