Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chains in critical fluids and nanopores   The conformational behavior of a polymer in a critical binary solvent
confined in a porous medium is studied. The size of the polymer in bulk, which
is mainly governed by the correlation length of the solvent density
fluctuations, depends on the proximity to the critical point of the binary
mixture. We find that in contrast to the bulk behavior, the conformational
properties of the polymer in a porous medium depends strongly on the pore size.
The latter controls the correlation length of the solvent density fluctuations
and thus determines the polymer size.

12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org