Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electrostriction of Polar Glasses   We develop a finite temperature theory for the susceptibility and
electrostriction of isotropic substances in which permanent electric dipoles
are restrained from free rotation by elastic forces. All parameters are
constrained by the measured susceptibility and elastic constants. When applied
to polyurethane, the predicted electrostriction is approximately consistent
wiht some of the wide range of data. The saturation of the electrostriction at
high field may be explained qualitatively if the dipoles consist of several
amide groups locked together by crystallization of the hard segments of the
polymer.

5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th