Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ab-initio study of the effects induced by the electron-phonon scattering
  in carbon based nanostructures   In this paper we investigate from first principles the effect of the
electron-phonon interaction in two paradigmatic nanostructures:
trans-polyacetylene and polyethylene. We found that the strong electron-phonon
interaction leads to the appearance of complex structures in the frequency
dependent electronic self-energy. Those structures rule out any quasi-particle
picture, and make the adiabatic and static approximations commonly used in the
well-established Heine Allen Cardona (HAC) approach inadequate. We propose,
instead, a fully ab-initio dynamical formulation of the problem within the Many
Body Perturbation Theory framework. The present dynamical theory reveals that
the structures appearing in the electronic self-energy are connected to the
existence of packets of correlated electron/phonon states. These states appear
in the spectral functions even at $T=0\,K$, revealing the key role played by
the zero point motion effect. We give a physical interpretation of these states
by disclosing their internal composition by mapping the Many Body problem to
the solution of an eigenvalue problem.

28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con