Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Large scale GW-BSE calculations with N3 scaling: excitonic effects in
  dye sensitised solar cells   Excitonic effects due to electron-hole coupling play a fundamental role in
renormalising energy levels in dye sensitised and organic solar cells
determining the driving force for electron extraction. We show that
first-principles calculations based on many-body perturbation theory within the
GW-BSE approach provide a quantitative picture of interfacial excited state
energetics in organic dye-sensitized TiO2 , delivering a general rule for
evaluating relevant energy levels.To perform GW-BSE calculations in such large
systems we introduce a new scheme based on maximally localized Wannier
functions. With this method the overall scaling of GW-BSE calculations is
reduced from O(N4) to O(N3).

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The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org