Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ab-initio calculation of band alignments for opto-electronic simulations   A modified core-to-valence band maximum approach is applied to calculate band
offsets of strained III/V semiconductor hetero junctions. The method is used
for the analysis of (In,Ga)As/GaAs/Ga(As,Sb) multi-quantum well structures. The
obtained offsets and the resulting bandstructure are used as input for the
microscopic calculation of photoluminescence spectra yielding very good
agreement with recent experimental results.

19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio