Mean-field dynamical density functional theory

Details Mean-field dynamical density functional theory Mean-field dynamical density functional theory

2003-01-20

arxiv.org/abs/cond-mat/0301345v1

Journal of Physics: Condensed Matter 15, L147-L154 (2003)

Physics

Condensed Matter

Soft Condensed Matter

8 pagers, 4 figures

Scientific paper

10.1088/0953-8984/15/6/102

We examine the out-of-equilibrium dynamical evolution of density profiles of ultrasoft particles under time-varying external confining potentials in three spatial dimensions. The theoretical formalism employed is the dynamical density functional theory (DDFT) of Marini Bettolo Marconi and Tarazona [J. Chem. Phys. {\bf 110}, 8032 (1999)], supplied by an equilibrium excess free energy functional that is essentially exact. We complement our theoretical analysis by carrying out extensive Brownian Dynamics simulations. We find excellent agreement between theory and simulations for the whole time evolution of density profiles, demonstrating thereby the validity of the DDFT when an accurate equilibrium free energy functional is employed.

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