Stochastic dynamics of collective modes for Brownian dipoles

LETICIA F CUGLIANDOLO; PIERRE-MICHEL DEJARDIN; GUSTAVO S LOZANO; FREDERIC VAN WIJLAND

PHYSICAL REVIEW E

AMER PHYSICAL SOC

Lugar: New York; Año: 2015 vol. 91 p. 32139 - 32139

1539-3755

The individual motion of a colloidal particle is described by an overdamped Langevin equation. When rotational degrees of freedom are relevant, these are described by a corresponding Langevin process. Our purpose is to show that the microscopic local density of colloids, in terms of a space and rotation state, also evolves according to a Langevin equation. The latter can then be used as the starting point of a variety of approaches, ranging from dynamical density functional theory to mode-coupling approximations.