Rotational correlation and dynamic heterogeneity in a kinetically constrained lattice gas

Details Rotational correlation and dynamic heterogeneity in a kinetically constrained lattice gas Rotational correlation and dynamic heterogeneity in a kinetically constrained lattice gas

2005-06-29

arxiv.org/abs/cond-mat/0506778v1

J. Chem. Phys. 123, 164501 (2005)

Physics

Condensed Matter

Soft Condensed Matter

7 pages, 5 figures

Scientific paper

We study dynamical heterogeneity and glassy dynamics in a kinetically constrained lattice gas model which has both translational and rotational degrees of freedom. We find that the rotational diffusion constant tracks the structural relaxation time as density is increased whereas the translational diffusion constant exhibits a strong decoupling. We investigate distributions of exchange and persistence times for both the rotational and translational degrees of freedom and compare our results on the distributions of rotational exchange times to recent single molecule studies.

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