Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Competition between the electronic and phonon-mediated scattering
  channels in the out-of-equilibrium carrier dynamics of semiconductors: an
  ab-initio approach   The carrier dynamics in bulk Silicon, a paradigmatic indirect gap
semiconductor, is studied by using the Baym-Kadanoff equations. Both the
electron--electron(e-e) and electron--phonon(e-p) self--energies are calculated
fully ab-initio by using a semi-static GW approximation in the e-e case and a
Fan self-energy in the e-p case. By using the generalized Baym-Kadanoff ansatz
the two-time evolution is replaced by the only dynamics on the macroscopic time
axis. The enormous numerical difficulties connected with a real-time simulation
of realistic systems is overcame by using a completed collision approximation
that further simplifies the memory effects connected to the time evolution. The
carrier dynamics is shown to reduce in such a way to have stringent connections
to the well-known equilibrium electron-electron and electron-phonon
self-energies. This link allows to use general arguments to motivate the
relative balance between the e-e and e-p scattering channels on the basis of
the carrier energies.

23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas