Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Band gap and band parameters of InN and GaN from quasiparticle energy
  calculations based on exact-exchange density-functional theory   We have studied the electronic structure of InN and GaN employing G0W0
calculations based on exact-exchange density-functional theory. For InN our
approach predicts a gap of 0.7 eV. Taking the Burnstein-Moss effect into
account, the increase of the apparent quasiparticle gap with increasing
electron concentration is in good agreement with the observed blue shift of the
experimental optical absorption edge. Moreover, the concentration dependence of
the effective mass, which results from the non-parabolicity of the conduction
band, agrees well with recent experimental findings. Based on the quasiparticle
band structure the parameter set for a 4x4 kp Hamiltonian has been derived.

34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
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The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat