Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Determining depletion interactions by contracting forces   We introduce a general physical formulation that allows one to obtain
uniquely the effectiveinteractions by contracting the bare forces, even in
highly concentrated systems. We tested it bystudying depletion forces in
two-dimensional binary and ternary colloidal mixtures with a totalpacking
fraction up to 70%. Our result opens up the possibility of finding an efficient
route todetermine effective interactions at finite concentration and even at
thermodynamic conditions nearto meta-stable or out of equilibrium states.

31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat