Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Polymer induced phase coexistence in systems of lamellar phases   The effect of adding nonadsorbing polymer to a lamellar phase of surfactant
bilayers is studied theoretically. We find that the polymer produces
coexistence between two lamellar phases of different layer spacings. The
coexistence region is a closed loop, as in the experiments of Ficheux et al.
[J. de Physique II 5 823 (1995)]. Within our model the coexistence is driven by
depletion.

27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an