Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Path Integral Computation of Phonon Anharmonicity   The partition function of an oscillator disturbed by a set of electron
particle paths has been computed by a path integral method which permits to
evaluate at any temperature the relevant cumulant terms in the series
expansion. The time dependent source current peculiar of the semiclassical
Su-Schrieffer-Heeger model induces large electron-phonon anharmonicities on the
phonon subsystem. As a main signature of anharmonicity the phonon heat capacity
shows a peak whose temperature location strongly varies with the strength of
the {\it e-ph} coupling. High energy oscillators are less sensitive to
anharmonic perturbations.

15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg