Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A possible demonstration of cooperative dynamical Jahn-Teller effect in
  Raman scattering spectrum of rhombohedral $LaMnO_3$   The Raman scattering (RS) spectra of rhombohedral $LaMnO_3$ is considered. It
is shown that broad high intensity RS line at 640 $cm^{-1}$ could be explained
in the framework of cooperative dynamical Jahn-Teller effect. This hypothesis
is illustrated through the lattice dynamics calculations explicitly allowing
for the electron-phonon term both in crystal energy and in dynamical matrix.
The averaging scheme for the one mode cooperative dynamical effect is proposed

26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol