Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Light-Scattering by Longitudinal phonons in Molecular Supercooled
  Liquids I: Phenomenological Approach   We derive expressions for the intensity of the Brillouin polarized spectrum
of a molecular liquid formed of axially symmetric molecules. These expressions
take into account both the molecular dielectric anisotropy and the modulation
of the local polarisability by density fluctuations. They also incorporate all
the retardation effects which occur in such liquids. We show that the spectrum
splits into a q-independent rotational contribution and q-dependent term, which
reflects the propagation of longitudinal phonons. In the latter, the two light
scattering mechanisms enter on an equal footing and generate three scattering
channels. We study the influence of the two new channels and show that they may
substantially modify the Brillouin line-shape when the relaxation time of the
supercooled liquid and the phonon period are of the same order of magnitude.

15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ