Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Casimir Effect in Fluids above the Isotropic-Lamellar Transition   We study fluctuation-induced interaction in confined fluids above the
isotropic-lamellar transition. At an ideal continuous transition, the
disjoining pressure has the asymptotic form $\Pi(d\to\infty)\approx -C k_BT
q_0^2/d$, where $d$ is the interwall distance, $q_0$ is the wavenumber of the
scattering peak, and $C= 1/(4\pi)$ in the strong anchoring limit. The
long-rangedness is enhanced due to continuous distribution of soft modes in the
${\bf q}$-space. An unconventionally strong Casimir force with a range of
several lamella thicknesses is realistic above the transition. We also find an
oscillatory force profile near a surface-induced transition.

28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat