Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Colloids and polymers in random colloidal matrices: demixing under
  good-solvent conditions   We consider a simplified coarse-grained model for colloid-polymer mixtures,
in which polymers are represented as monoatomic molecules interacting by means
of pair potentials. We use it to study polymer-colloid segregation in the
presence of a quenched matrix of colloidal hard spheres. We fix the
polymer-to-colloid size ratio to 0.8 and consider matrices such that the
fraction f of the volume that is not accessible to the colloids due to the
matrix is equal to 40%. As in the Asakura-Oosawa-Vrij (AOV) case, we find that
binodal curves in the polymer and colloid volume-fraction plane have a small
dependence on disorder. As for the position of the critical point, the behavior
is different from that observed in the AOV case: while the critical colloid
volume fraction is essentially the same in the bulk and in the presence of the
matrix, the polymer volume fraction at criticality increases as f increases. At
variance with the AOV case, no capillary colloid condensation or evaporation is
generically observed.

29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex