Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effects of charged defects on the electronic and optical properties of
  self-assembled quantum dots   We investigate the effects of point charge defects on the single particle
electronic structure, emission energies, fine structure splitting and
oscillator strengths of excitonic transitions in strained
In$_{0.6}$Ga$_{0.4}$As/GaAs and strain-free GaAs/Al$_{0.3}$Ga$_{0.7}$As quantum
dots. We find that the charged defects significantly modify the single particle
electronic structure and excitonic spectra in both strained and strain-free
structures. However, the excitonic fine structure splitting, polarization
anisotropy and polarization direction in strained quantum dots remain nearly
unaffected, while significant changes are observed for strain-free quantum
dots.

31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex