The study of the dynamical heterogeneity in the β-relaxation time regime

The two-dimensional molecular dynamics simulation with soft-sphere particles

Tadashi Muranaka, Jun Matsui, Yasuaki Hiwatari

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Abstract

We study the dynamical propensity of the β relaxation using the two-dimensional molecular dynamics simulation of the binary soft-sphere model. The correlative motion of particles and the dynamical heterogeneity in the β relaxation time regime is studied in detail with the correlation function CMi (t), which has previously been introduced by us and found to be an effective measure of vector-like correlative motions of particles among surrounding particles. It is found that the correlation is enough long-lived and long-ranged to bring significant system-size dependence of the mean-squared displacements in the intermediate time region of our concern.

Original languageEnglish
Pages (from-to)133-140
Number of pages8
JournalProgress of Theoretical Physics Supplement
Issue number178
DOIs
Publication statusPublished - Jan 1 2009

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relaxation time
molecular dynamics
simulation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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