Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Statics and Dynamics of Colloid-Polymer Mixtures Near Their Critical
  Point of Phase Separation: A Computer Simulation Study of a Continuous AO
  Model   We propose a new coarse-grained model for the description of liquid-vapor
phase separation of colloid-polymer mixtures. The hard-sphere repulsion between
colloids and between colloids and polymers, which is used in the well-known
Asakura-Oosawa (AO) model, is replaced by Weeks-Chandler-Anderson potentials.
Similarly, a soft potential of height comparable to thermal energy is used for
the polymer-polymer interaction, rather than treating polymers as ideal gas
particles. It is shown by grand-canonical Monte Carlo simulations that this
model leads to a coexistence curve that almost coincides with that of the AO
model and the Ising critical behavior of static quantities is reproduced. Then
the main advantage of the model is exploited - its suitability for Molecular
Dynamics simulations - to study the dynamics of mean square displacements of
the particles, transport coefficients such as the self-diffusion and
interdiffusion coefficients, and dynamic structure factors. While the
self-diffusion of polymers increases slightly when the critical point is
approached, the self-diffusion of colloids decreases and at criticality the
colloid self-diffusion coefficient is about a factor of 10 smaller than that of
the polymers. Critical slowing down of interdiffusion is observed, which is
qualitatively similar to symmetric binary Lennard-Jones mixtures, for which no
dynamic asymmetry of self-diffusion coefficients occurs.

1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat